Bump version to 2026.7.0-beta.0

* fix: reply note visibility check

* docs(changelog): update changelog

* fix: wrong operator

* docs(changelog): fix insert position and wording

---------

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

.claude/THIRD_PARTY_LICENSES.md

@@ -19,7 +19,7 @@
 |---|---|---|---|
 | `skills/context-budget/SKILL.md` | `skills/context-budget/SKILL.md` | ECC | description を日本語化、Misskey 固有メモを追記 |
 | `commands/harness-audit.md` | `commands/harness-audit.md` | ECC | scripts 依存の自動採点を、Claude が `pnpm`/`git`/`grep` で手動採点する版に書き換え。Misskey 固有の評価軸 (SPDX / endpoint-list / migration / locales) を組み込み |
-| `commands/quality-gate.md` | `commands/quality-gate.md` | ECC | 言語自動判定を排除し Misskey 固定 pipeline (`pnpm` + tsgo + ESLint + Vitest) に。Prettier/Biome フェーズを削除 |
+| `commands/quality-gate.md` | `commands/quality-gate.md` | ECC | 言語自動判定を排除し Misskey 固定 pipeline (`pnpm` + tsc + ESLint + Vitest) に。Prettier/Biome フェーズを削除 |
 
 ### MIT License (full text)
 

.claude/commands/harness-audit.md

@@ -35,7 +35,7 @@ Misskey リポジトリの `.claude/` 構成を 7 カテゴリで採点し、改
 | 2 | Context Efficiency | frontmatter description の冗長度、SKILL.md の長さ分布、重複情報、CLAUDE.md の肥大化 |
 | 3 | Quality Gates | Stop / PreToolUse / PostToolUse hook の整備、`/quality-gate` 等の完了前ゲートの有無、自動 lint/typecheck |
 | 4 | Memory Persistence | `.claude/skills/*/SKILL.md` と `references/` の同期状態を評価。プロジェクト側 `.claude/memory/` は未採用方針 (auto-memory はユーザーホーム側で自動運用) のため、ここを採点起点にせず既定 5/10 から開始する |
-| 5 | Eval Coverage | `working-on-backend` / `working-on-frontend` の testing リファレンス (backend-testing.md / frontend-testing.md) の網羅、Misskey 固有の e2e/fed/Storybook/Cypress 適用ガイド |
+| 5 | Eval Coverage | `working-on-backend` / `working-on-frontend` の testing リファレンス (backend-testing.md / frontend-testing.md) の網羅、Misskey 固有の e2e/fed/Storybook/Playwright 適用ガイド |
 | 6 | Security Guardrails | SPDX 規約適用、migration 不変性ルール、ja-JP.yml 限定編集ルール、secrets 検出 |
 | 7 | Cost Efficiency | enabledPlugins の重複・過剰、context-budget の整備、MCP 過剰登録なし |
 

.claude/commands/quality-gate.md

@@ -12,16 +12,16 @@ upstream path: commands/quality-gate.md
 upstream license: MIT — https://github.com/affaan-m/everything-claude-code/blob/main/LICENSE
 project-level notice: see .claude/THIRD_PARTY_LICENSES.md (Misskey 内サードパーティ一覧 + MIT 全文)
 
-Imported into Misskey .claude/ on 2026-05-10. Pipeline 概念 (lint → typecheck → test) は upstream ECC 版から借用 (MIT)。実コマンド層は Misskey の pnpm + tsgo + ESLint + Vitest に固定し、formatter (Prettier/Biome) フェーズは削除した。
+Imported into Misskey .claude/ on 2026-05-10. Pipeline 概念 (lint → typecheck → test) は upstream ECC 版から借用 (MIT)。実コマンド層は Misskey の pnpm + tsc + ESLint + Vitest に固定し、formatter (Prettier/Biome) フェーズは削除した。
 
-note: 元 ECC 版は言語自動判定 + format/lint/type のジェネリック版だったが、Misskey 専用に pnpm + tsgo + ESLint + Vitest の組み合わせに固定。重い test:e2e / test:fed は含まない (CI 側で実行される)。
+note: 元 ECC 版は言語自動判定 + format/lint/type のジェネリック版だったが、Misskey 専用に pnpm + tsc + ESLint + Vitest の組み合わせに固定。重い test:e2e / test:fed は含まない (CI 側で実行される)。
 -->
 
 # /quality-gate — Misskey 軽量品質ゲート
 
 `/quality-gate [scope]`
 
-完了前の **軽量** 品質チェック。重い E2E / 連合テスト (test:e2e / test:fed / Cypress) は CI 側で実行されるため、本コマンドには含めない。
+完了前の **軽量** 品質チェック。重い E2E / 連合テスト (test:e2e / test:fed / Playwright) は CI 側で実行されるため、本コマンドには含めない。
 
 ## Scope
 
@@ -50,7 +50,7 @@ pnpm --filter frontend test
 lint がまとめて失敗していて typecheck の結果だけ単独で見たい場合は、以下を個別に回す。**通常は不要** (lint の出力を読めば足りる):
 
 ```bash
-pnpm --filter backend typecheck    # tsgo 単体
+pnpm --filter backend typecheck    # tsc 単体
 pnpm --filter frontend typecheck   # vue-tsc 単体 (Vue SFC の型を見るため)
 ```
 
@@ -63,7 +63,7 @@ pnpm --filter backend lint
 pnpm --filter backend test
 ```
 
-`tsgo` の出力を単独で見たい時のみ optional で `pnpm --filter backend typecheck` を別途回す。
+`tsc` の出力を単独で見たい時のみ optional で `pnpm --filter backend typecheck` を別途回す。
 
 ### Frontend scope
 
@@ -120,4 +120,4 @@ Frontend ut: PASS  (87/87)
 
 - ジェネリックな言語自動判定を排除し、Misskey 固定 pipeline に。
 - formatter フェーズなし (Misskey は ESLint --fix のみ採用)。
-- e2e / federation / Cypress は重いため除外し CI 側に委譲。
+- e2e / federation / Playwright は重いため除外し CI 側に委譲。

.claude/skills/working-on-backend/references/knowledge/backend-testing.md

@@ -26,7 +26,7 @@ cp .github/misskey/test.yml .config/test.yml
 
 補足:
 
-- ルートの `pnpm start:test` (Cypress 用にテストサーバーを起動するコマンド) を使う経路では実行時に `ncp` で自動コピーされる ([package.json](../../../../../package.json))。それ以外で backend テストを直接走らせる時は上記の手動コピーが必要
+- ルートの `pnpm start:test` (Playwright 用にテストサーバーを起動するコマンド) を使う経路では実行時に `ncp` で自動コピーされる ([package.json](../../../../../package.json))。それ以外で backend テストを直接走らせる時は上記の手動コピーが必要
 - すでに `.config/test.yml` があれば各テストスクリプトの内部 `compile-config` で十分なので、追加で `pnpm --filter backend compile-config` を叩く必要はない
 - `pnpm start:test` は backend e2e テスト (`pnpm --filter backend test:e2e`) の前提ではない (ポート競合の元になるため使わないこと)
 

.claude/skills/working-on-backend/references/knowledge/nestjs-di.md

@@ -6,7 +6,7 @@ Misskey の backend は NestJS 11 + Fastify 5 + TypeORM 1 (PostgreSQL) + Redis
 
 - **DI コンテナ**: NestJS の `@Injectable()` サービス + Repository (TypeORM) パターン
 - **DI トークン**: [`@/di-symbols.js`](../../../../../packages/backend/src/di-symbols.ts) の `DI` から `@Inject(DI.xxx)` で注入
-- **ビルド**: `rolldown -c` で `built/` にバンドル。型チェックは `tsgo`
+- **ビルド**: `rolldown -c` で `built/` にバンドル。型チェックは `tsc`
 
 ## エンドポイント内での DI
 

.claude/skills/working-on-backend/references/tasks/adding-api-endpoint.md

@@ -236,7 +236,7 @@ pnpm --filter backend test:e2e
 ```bash
 # 個別ファイルを高速にチェック
 pnpm exec eslint --fix packages/backend/src/server/api/endpoints/<category>/<name>.ts
-pnpm --filter backend typecheck      # tsgo --noEmit (backend のみ)
+pnpm --filter backend typecheck      # tsc --noEmit (backend のみ)
 
 # 一括 (PR 提出前)
 pnpm --filter backend lint

.claude/skills/working-on-frontend/SKILL.md

@@ -27,7 +27,7 @@ SKILL.md 本体は references への索引だけ。具体的な手順や規約
 - SCSS Modules / `--MI_THEME-*` `--MI-*` CSS 変数 / グローバル utility class (`_button` 等) → [references/knowledge/scss-modules.md](references/knowledge/scss-modules.md)
 - `os.alert` / `os.confirm` / `os.popup` 等 UI ヘルパー (ブラウザ標準 `alert()` 直呼びは禁止) → [references/knowledge/os-api.md](references/knowledge/os-api.md)
 - `*.stories.impl.ts` 併設規則 + 複数 story / argTypes / layout / action パターン → [references/knowledge/storybook.md](references/knowledge/storybook.md)
-- frontend Vitest / Cypress E2E の書き方と前提 → [references/knowledge/frontend-testing.md](references/knowledge/frontend-testing.md)
+- frontend Vitest / Playwright E2E の書き方と前提 → [references/knowledge/frontend-testing.md](references/knowledge/frontend-testing.md)
 
 ## 必ず最後に通る場所
 

.claude/skills/working-on-frontend/references/knowledge/frontend-testing.md

@@ -1,4 +1,4 @@
-# Frontend テスト (Vitest / Cypress)
+# Frontend テスト (Vitest / Playwright)
 
 Misskey frontend のテスト構成。
 
@@ -13,11 +13,11 @@ pnpm --filter frontend test-and-coverage   # カバレッジ付き
 
 - 主な配置: `packages/frontend/test/*.test.ts` (例: `i18n.test.ts`, `theme.test.ts`, `is-birthday.test.ts`)
 - ビルドツール周りなど対象コードと隣接させた方が分かりやすいテストは、コードと同じディレクトリに `*.test.ts` として置く (例: [packages/frontend/lib/rollup-plugin-unwind-css-module-class-name.test.ts](../../../../../packages/frontend/lib/rollup-plugin-unwind-css-module-class-name.test.ts))
-- 共有コンポーネント (`MkX.vue`) のユニットテストは現状少なく、`*.spec.ts` / `__tests__/` 形式は採用していない (Storybook + Cypress でカバー)
+- 共有コンポーネント (`MkX.vue`) のユニットテストは現状少なく、`*.spec.ts` / `__tests__/` 形式は採用していない (Storybook + Playwright でカバー)
 
-## Cypress E2E
+## Playwright E2E
 
-Cypress は **起動済みのテストサーバー** に対して走るため、unit より前提が多い。[.github/workflows/test-frontend.yml](../../../../../.github/workflows/test-frontend.yml) の `e2e` ジョブと同じ手順をローカルで踏む:
+Playwright は **起動済みのテストサーバー** に対して走るため、unit より前提が多い。[.github/workflows/test-frontend.yml](../../../../../.github/workflows/test-frontend.yml) の `e2e` ジョブと同じ手順をローカルで踏む:
 
 ```bash
 # 1. テスト用 DB / Redis を起動 (テスト用ポート。開発用の compose.local-db.yml ではない)
@@ -29,15 +29,14 @@ cp .github/misskey/test.yml .config/test.yml
 # 3. 全体ビルド
 pnpm build
 
-# 4. テストサーバー起動 + Cypress 実行 (いずれもルートから)
-pnpm e2e                # 内部で pnpm start:test を起動し http://localhost:61812 を待って Cypress run
-pnpm cy:open            # 対話的に開く (サーバーは別途 pnpm start:test で起動しておく)
+# 4. テストサーバー起動 + Playwright 実行 (いずれもルートから)
+pnpm e2e                # 内部で pnpm start:test を起動し http://localhost:61812 を待って Playwright を実行
 ```
 
-- 設定: ルート [cypress.config.ts](../../../../../cypress.config.ts)
-- テスト本体は [cypress/](../../../../../cypress/) 配下
+- 設定: ルート [packages/frontend/playwright.config.ts](../../../../../packages/frontend/playwright.config.ts) で、`packages/frontend/test/e2e/` 配下の `*.spec.ts` を対象にする
+- テスト本体は [packages/frontend/test/e2e/](../../../../../packages/frontend/test/e2e/) 配下に配置する。
 
-新規 frontend 機能の E2E は Cypress に書くのが基本。ただし対象は主要 UI フロー (login / post / drive etc) に限定し、細かい単位テストは Vitest または Storybook で代替する慣習。
+新規 frontend 機能の E2E は Playwright に書くのが基本。ただし対象は主要 UI フロー (login / post / drive etc) に限定し、細かい単位テストは Vitest または Storybook で代替する慣習。
 
 ## Storybook (視覚確認 + Chromatic 視覚回帰)
 
@@ -55,6 +54,6 @@ pnpm --filter frontend build-storybook    # 静的ビルド
 frontend のテスト種別で DB / Redis の要否が違う:
 
 - **Vitest (unit)** — DB 不要。ロジック / コンポーネント単体のテストで backend に繋がない (CI の `vitest` ジョブにも `services:` は無い)
-- **Cypress (E2E)** — テストサーバー (`pnpm start:test`) 経由で backend に繋ぐため DB / Redis が必要。**テスト用ポートの [packages/backend/test/compose.yml](../../../../../packages/backend/test/compose.yml)** を使う (上記 Cypress E2E の手順を参照)
+- **Playwright (E2E)** — テストサーバー (`pnpm start:test`) 経由で backend に繋ぐため DB / Redis が必要。**テスト用ポートの [packages/backend/test/compose.yml](../../../../../packages/backend/test/compose.yml)** を使う (上記 Playwright E2E の手順を参照)
 
 開発用の `compose.local-db.yml` (db `5432` / redis `6379`) は **テストには使わない**。テスト用の `packages/backend/test/compose.yml` (`54312` / `56312`) とはポートが異なり、混同すると接続できない。

.coderabbit.yaml

@@ -0,0 +1,17 @@
+language: "ja-JP"
+tone_instructions: "常に丁寧語（です・ます調）を用い、敬意のある表現で応答してください。人格や能力への評価、皮肉、威圧的・高圧的・命令的な表現は避けてください。指摘では問題点と影響を明確にし、理由を簡潔に説明したうえで、具体的な改善案を提案してください。不確実な事項は推測と明示し、確認を促してください。重大なバグやセキュリティ上の懸念は重要度と根拠を明確に伝えてください。"
+reviews:
+  profile: "chill"
+  high_level_summary: false
+  poem: true
+  auto_review:
+    enabled: true
+    drafts: false
+    base_branches:
+      - "develop"
+    ignore_title_keywords:
+      - "New Crowdin updates"
+    ignore_usernames:
+      - "dependabot[bot]"
+      - "renovate[bot]"
+      - "github-actions[bot]"

.config/docker_example.yml

@@ -233,15 +233,24 @@ proxyBypassHosts:
 # For security reasons, uploading attachments from the intranet is prohibited,
 # but exceptions can be made from the following settings. Default value is "undefined".
 # Read changelog to learn more (Improvements of 12.90.0 (2021/09/04)).
-#allowedPrivateNetworks: [
-#  '127.0.0.1/32'
-#]
+#allowedPrivateNetworks:
+#  - '127.0.0.1/32'
 
 # Upload or download file size limits (bytes)
 #maxFileSize: 262144000
 
 # Log settings
 # logging:
+#   # ログの出力形式。「json」で1行JSON、未指定時は「pretty」です。
+#   format: pretty
+#   # Minimum level for all loggers. Defaults to info in production and debug otherwise.
+#   level: info
+#   # The longest matching logger domain takes precedence over the global level.
+#   domains:
+#     core.boot: info
+#     queue: error
+#     queue.deliver: debug
+#     db.sql: off
 #   sql:
 #     # Outputs query parameters during SQL execution to the log.
 #     # default: false

.config/example.yml

@@ -303,8 +303,88 @@ id: 'aidx'
 
 #sentryForBackend:
 #  enableNodeProfiling: true
+#  # Specify Sentry integration names to disable individual auto-instrumentation.
+#  # The names are integration .name values, not factory function names.
+#  # To check enabled names, set `options.debug: true` and see
+#  # "Integration installed: <name>" in the Sentry logs.
+#  #
+#  # As of 2026-07-07 / @sentry/node 10.62.0, useful names for Misskey include:
+#  #   Postgres  ... DB queries (when pg is externalized)
+#  #   Redis     ... ioredis commands
+#  #   Fastify   ... inbound HTTP routes
+#  #   Http      ... inbound/outbound HTTP; disabling this can also affect request isolation
+#  #   NodeFetch ... fetch/undici requests
+#  disabledIntegrations: ['Postgres']
 #  options:
 #    dsn: 'https://examplePublicKey@o0.ingest.sentry.io/0'
+#    # By default, Misskey prevents Sentry trace headers (`sentry-trace` and
+#    # `baggage`) from being sent to remote ActivityPub/Webhook/etc. hosts.
+#    # To intentionally propagate distributed traces to trusted internal services,
+#    # list only those internal URL patterns here.
+#    # Avoid broad patterns that match remote servers unless you intentionally
+#    # want to restore Sentry's legacy behavior of propagating traces to all
+#    # outbound HTTP requests.
+#    #tracePropagationTargets: []
+#    # Internal allowlist example:
+#    #tracePropagationTargets:
+#    #  - 'internal-service.example'
+
+#   ┌─────────┐
+#───┘ Tracing └────────────────────────────────────────────────
+# OpenTelemetry distributed tracing (Traces only, opt-in).
+# Existing API and Queue spans are exported to an OTLP http/protobuf endpoint.
+#
+# Standard OTEL_* environment variables are honored for values omitted below:
+# OTEL_EXPORTER_OTLP_TRACES_ENDPOINT, OTEL_EXPORTER_OTLP_ENDPOINT,
+# OTEL_EXPORTER_OTLP_HEADERS, OTEL_TRACES_SAMPLER, OTEL_TRACES_SAMPLER_ARG, etc.
+#
+# When this is enabled together with sentryForBackend, Misskey shares Sentry's
+# TracerProvider and adds an OTLP SpanProcessor to it. In that mode:
+# - sampleRate below is ignored; sampling follows sentryForBackend.options
+#   tracesSampleRate / tracesSampler.
+# - resourceAttributes below is ignored; set OTEL_SERVICE_NAME and
+#   OTEL_RESOURCE_ATTRIBUTES in the environment if you need to override them.
+# - spans produced by Sentry integrations are exported to both Sentry and OTLP.
+# - sentry-trace / baggage propagation to outbound remote requests is disabled
+#   by default while OTel is enabled. Set propagateTraceToRemote: true only if
+#   you intentionally want Sentry trace propagation for your deployment.
+
+#otelForBackend:
+#  endpoint: 'http://localhost:4318/v1/traces'
+#  #headers:
+#  #  authorization: 'Bearer xxxxx'
+#  #sampleRate: 1.0
+#  # Record PostgreSQL query spans. Disabled by default to avoid instrumentation
+#  # overhead when database-level diagnostics are not needed.
+#  #capturePgSpans: false
+#  # Include raw SQL text in PostgreSQL spans. Requires capturePgSpans and is
+#  # disabled by default because non-parameterized queries can expose values to
+#  # the OTLP Collector.
+#  #capturePgStatement: false
+#  # Include PostgreSQL connection-pool spans with an existing parent span.
+#  # Requires capturePgSpans and is disabled by default to avoid noisy spans
+#  # from connection churn.
+#  #capturePgConnectionSpans: false
+#  # Record Redis command spans. Disabled by default because subscribing to the
+#  # ioredis diagnostics channel adds work to every Redis command, including
+#  # commands without a parent span. Enable for development diagnostics or when
+#  # the added overhead is acceptable in production.
+#  #captureRedisCommandSpans: false
+#  # Include Redis startup/reconnect spans. Disabled by default to avoid noisy
+#  # connection churn; these spans are recorded even without an HTTP or job
+#  # parent span.
+#  #captureRedisConnectionSpans: false
+#  # Record Redis commands without an HTTP or job parent span. Disabled by
+#  # default because queue polling and background work can produce many root
+#  # traces; only applies when captureRedisCommandSpans is enabled.
+#  #captureRedisRootSpans: false
+#  #resourceAttributes:
+#  #  deployment.environment: 'production'
+#  #propagateTraceToRemote: false
+#  # Queue worker spans are independent traces linked to their enqueuer by default.
+#  # Set to 'parent' to make them child spans instead. This can create very large
+#  # traces for high-fan-out queues such as federation delivery.
+#  #jobTraceContextMode: 'link'
 
 #sentryForFrontend:
 #  vueIntegration:
@@ -383,9 +463,8 @@ proxyBypassHosts:
 # For security reasons, uploading attachments from the intranet is prohibited,
 # but exceptions can be made from the following settings. Default value is "undefined".
 # Read changelog to learn more (Improvements of 12.90.0 (2021/09/04)).
-#allowedPrivateNetworks: [
-#  '127.0.0.1/32'
-#]
+#allowedPrivateNetworks:
+#  - '127.0.0.1/32'
 
 # Upload or download file size limits (bytes)
 #maxFileSize: 262144000
@@ -395,6 +474,16 @@ proxyBypassHosts:
 
 # Log settings
 # logging:
+#   # ログの出力形式。「json」で1行JSON、未指定時は「pretty」です。
+#   format: pretty
+#   # Minimum level for all loggers. Defaults to info in production and debug otherwise.
+#   level: info
+#   # The longest matching logger domain takes precedence over the global level.
+#   domains:
+#     core.boot: info
+#     queue: error
+#     queue.deliver: debug
+#     db.sql: off
 #   sql:
 #     # Outputs query parameters during SQL execution to the log.
 #     # default: false

.config/playwright-devcontainer.yml

@@ -218,9 +218,8 @@ proxyBypassHosts:
 # Media Proxy
 #mediaProxy: https://example.com/proxy
 
-allowedPrivateNetworks: [
-  '127.0.0.1/32'
-]
+allowedPrivateNetworks:
+ - '127.0.0.1/32'
 
 # Upload or download file size limits (bytes)
 #maxFileSize: 262144000

.devcontainer/devcontainer.json

@@ -5,7 +5,7 @@
 	"workspaceFolder": "/workspace",
 	"features": {
 		"ghcr.io/devcontainers/features/node:1": {
-			"version": "22.15.0"
+			"version": "22.23.1"
 		},
 		"ghcr.io/devcontainers-extra/features/pnpm:2": {
 			"version": "10.10.0"

.devcontainer/devcontainer.yml

@@ -205,9 +205,8 @@ proxyBypassHosts:
 # Media Proxy
 #mediaProxy: https://example.com/proxy
 
-allowedPrivateNetworks: [
-  '127.0.0.1/32'
-]
+allowedPrivateNetworks:
+ - '127.0.0.1/32'
 
 # Upload or download file size limits (bytes)
 #maxFileSize: 262144000

.devcontainer/init.sh

@@ -12,4 +12,4 @@ pnpm install --frozen-lockfile
 cp .devcontainer/devcontainer.yml .config/default.yml
 pnpm build
 pnpm migrate
-pnpm exec cypress install
+pnpm --filter frontend exec playwright install --with-deps chromium

.github/dependabot.yml

@@ -37,6 +37,3 @@ updates:
     typescript-eslint:
       patterns:
         - "@typescript-eslint/*"
-    tensorflow:
-      patterns:
-        - "@tensorflow/*"

.github/labeler.yml

@@ -16,7 +16,7 @@
 'packages/frontend:test':
 - any:
   - changed-files:
-    - any-glob-to-any-file: ['cypress/**/*']
+    - any-glob-to-any-file: ['packages/frontend/test/**/*']
 
 'packages/sw':
 - any:

.github/min.node-version

@@ -1 +1 @@
-22.15.0
+22.22.2

.github/scripts/backend-diagnostics.inspect.mts

@@ -0,0 +1,239 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { createRequire } from 'node:module';
+import { copyFile, rm, writeFile } from 'node:fs/promises';
+import { join, resolve } from 'node:path';
+import * as util from './utility.mts';
+import * as heapSnapshotUtil from './heap-snapshot-util.mts';
+import type { MemorySample } from '../../packages/backend/scripts/measure-memory.mts';
+
+const phases = ['afterGc'] as const;
+
+export type MemoryReport = {
+	timestamp: string;
+	sampleCount: number;
+	aggregation: string;
+	summary: Record<typeof phases[number], {
+		memoryUsage: Record<string, number>;
+		heapSnapshot?: heapSnapshotUtil.HeapSnapshotData;
+	}>;
+	samples: (MemorySample & {
+		round: number;
+	})[];
+};
+
+const [baseDirArg, headDirArg, baseOutputArg, headOutputArg] = process.argv.slice(2);
+
+const HEAP_SNAPSHOT_BREAKDOWN_TOP_N = util.readIntegerEnv('MK_MEMORY_HEAP_SNAPSHOT_BREAKDOWN_TOP_N', heapSnapshotUtil.defaultHeapSnapshotBreakdownTopN, 1);
+const heapSnapshotLabels = ['base', 'head'] as const;
+const HEAP_SNAPSHOT_WORK_DIRS = {
+	base: resolve('base-heap-snapshots'),
+	head: resolve('head-heap-snapshots'),
+};
+const HEAP_SNAPSHOT_OUTPUT_PATHS = {
+	base: resolve('base-heap-snapshot.heapsnapshot'),
+	head: resolve('head-heap-snapshot.heapsnapshot'),
+};
+// Use the head checkout's measurement harness for both targets so only the built backend differs.
+const MEASURE_MEMORY_SCRIPT = resolve(import.meta.dirname, '../../packages/backend/scripts/measure-memory.mts');
+
+async function resetState(repoDir: string) {
+	const require = createRequire(join(repoDir, 'packages/backend/package.json'));
+	const pg = require('pg');
+	const Redis = require('ioredis');
+
+	const postgres = new pg.Client({
+		host: '127.0.0.1',
+		port: 54312,
+		database: 'postgres',
+		user: 'postgres',
+	});
+
+	await postgres.connect();
+	try {
+		await postgres.query('DROP DATABASE IF EXISTS "test-misskey" WITH (FORCE)');
+		await postgres.query('CREATE DATABASE "test-misskey"');
+	} finally {
+		await postgres.end();
+	}
+
+	const redis = new Redis({ host: '127.0.0.1', port: 56312 });
+	try {
+		await redis.flushall();
+	} finally {
+		redis.disconnect();
+	}
+}
+
+function summarizeSamples(samples: MemoryReport['samples']) {
+	const summary = {} as MemoryReport['summary'];
+
+	for (const phase of phases) {
+		summary[phase] = {
+			memoryUsage: {},
+		};
+
+		const metricKeys = new Set<string>();
+		for (const sample of samples) {
+			for (const key of Object.keys(sample.phases[phase].memoryUsage)) {
+				metricKeys.add(key);
+			}
+		}
+
+		for (const key of metricKeys) {
+			const values = samples.map(sample => sample.phases[phase].memoryUsage[key]);
+			summary[phase].memoryUsage[key] = util.median(values);
+		}
+
+		const heapSnapshot = heapSnapshotUtil.summarizeHeapSnapshotDataSamples(
+			samples,
+			sample => sample.phases[phase].heapSnapshot,
+			{ breakdownTopN: HEAP_SNAPSHOT_BREAKDOWN_TOP_N },
+		);
+		if (heapSnapshot != null) summary[phase].heapSnapshot = heapSnapshot;
+	}
+
+	return summary;
+}
+
+async function genSample(label: string, repoDir: string, round: number, options: { heapSnapshotSavePath?: string } = {}) {
+	process.stderr.write(`[${label}] Resetting database and Redis\n`);
+	await resetState(repoDir);
+
+	process.stderr.write(`[${label}] Running migrations\n`);
+	await util.run('pnpm', ['--filter', 'backend', 'migrate'], {
+		cwd: repoDir,
+		env: process.env,
+		logStdout: true,
+	});
+
+	process.stderr.write(`[${label}] Measuring memory\n`);
+	const measureEnv = {
+		...process.env,
+		MK_MEMORY_BACKEND_DIR: resolve(repoDir, 'packages/backend'),
+	} as NodeJS.ProcessEnv;
+	if (round <= 0) measureEnv.MK_MEMORY_HEAP_SNAPSHOT = '0';
+	if (options.heapSnapshotSavePath != null) measureEnv.MK_MEMORY_HEAP_SNAPSHOT_SAVE_PATH = options.heapSnapshotSavePath;
+
+	const stdout = await util.run('node', [MEASURE_MEMORY_SCRIPT], {
+		cwd: repoDir,
+		env: measureEnv,
+	});
+
+	return JSON.parse(stdout) as MemorySample;
+}
+
+function heapSnapshotPath(label: typeof heapSnapshotLabels[number], round: number) {
+	return join(HEAP_SNAPSHOT_WORK_DIRS[label], `round-${round}.heapsnapshot`);
+}
+
+function selectRepresentativeHeapSnapshotRound(samples: MemoryReport['samples'], summary: MemoryReport['summary']) {
+	const medianTotal = summary.afterGc.heapSnapshot?.categories?.total;
+	if (medianTotal == null || !Number.isFinite(medianTotal)) return null;
+
+	let selected: { round: number; distance: number } | null = null;
+	for (const sample of samples) {
+		const total = sample.phases.afterGc.heapSnapshot?.categories?.total;
+		if (total == null || !Number.isFinite(total)) continue;
+
+		const distance = Math.abs(total - medianTotal);
+		if (selected == null || distance < selected.distance || (distance === selected.distance && sample.round < selected.round)) {
+			selected = {
+				round: sample.round,
+				distance,
+			};
+		}
+	}
+
+	return selected?.round ?? null;
+}
+
+async function saveRepresentativeHeapSnapshot(label: typeof heapSnapshotLabels[number], samples: MemoryReport['samples'], summary: MemoryReport['summary']) {
+	const round = selectRepresentativeHeapSnapshotRound(samples, summary);
+	if (round == null) return;
+
+	await copyFile(heapSnapshotPath(label, round), HEAP_SNAPSHOT_OUTPUT_PATHS[label]);
+	process.stderr.write(`Selected ${label} heap snapshot round ${round} for artifact\n`);
+	await rm(HEAP_SNAPSHOT_WORK_DIRS[label], { recursive: true, force: true });
+}
+
+async function main() {
+	const baseDir = resolve(baseDirArg);
+	const headDir = resolve(headDirArg);
+	const baseOutput = resolve(baseOutputArg);
+	const headOutput = resolve(headOutputArg);
+	const rounds = util.readIntegerEnv('MK_MEMORY_COMPARE_ROUNDS', 5, 1);
+	const warmupRounds = util.readIntegerEnv('MK_MEMORY_COMPARE_WARMUP_ROUNDS', 1, 0);
+	const startedAt = new Date().toISOString();
+
+	for (const label of heapSnapshotLabels) {
+		await rm(HEAP_SNAPSHOT_WORK_DIRS[label], { recursive: true, force: true });
+		await rm(HEAP_SNAPSHOT_OUTPUT_PATHS[label], { force: true });
+	}
+
+	const reports = {
+		base: {
+			dir: baseDir,
+			samples: [] as MemoryReport['samples'],
+		},
+		head: {
+			dir: headDir,
+			samples: [] as MemoryReport['samples'],
+		},
+	};
+
+	for (let round = 1; round <= warmupRounds; round++) {
+		process.stderr.write(`Starting warmup round ${round}/${warmupRounds}\n`);
+		for (const label of heapSnapshotLabels) {
+			await genSample(label, reports[label].dir, -round);
+		}
+	}
+
+	for (let round = 1; round <= rounds; round++) {
+		const order = round % 2 === 1 ? ['base', 'head'] as const : ['head', 'base'] as const;
+		process.stderr.write(`Starting measurement round ${round}/${rounds}: ${order.join(' -> ')}\n`);
+
+		for (const label of order) {
+			const options = { heapSnapshotSavePath: heapSnapshotPath(label, round) };
+			const sample = await genSample(label, reports[label].dir, round, options);
+			reports[label].samples.push({
+				...sample,
+				round,
+			});
+		}
+	}
+
+	const summaries = {
+		base: summarizeSamples(reports.base.samples),
+		head: summarizeSamples(reports.head.samples),
+	};
+	for (const label of heapSnapshotLabels) {
+		await saveRepresentativeHeapSnapshot(label, reports[label].samples, summaries[label]);
+	}
+
+	for (const label of heapSnapshotLabels) {
+		const report = {
+			timestamp: new Date().toISOString(),
+			sampleCount: reports[label].samples.length,
+			aggregation: 'median',
+			comparison: {
+				strategy: 'interleaved-pairs',
+				rounds,
+				warmupRounds,
+				startedAt,
+			},
+			summary: summaries[label],
+			samples: reports[label].samples,
+		};
+
+		await writeFile(label === 'base' ? baseOutput : headOutput, `${JSON.stringify(report, null, 2)}\n`);
+	}
+}
+
+main().catch(err => {
+	console.error(err);
+	process.exit(1);
+});

.github/scripts/backend-diagnostics.render-md.mts

@@ -0,0 +1,183 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { readFile, writeFile } from 'node:fs/promises';
+import * as util from './utility.mts';
+import * as heapSnapshotUtil from './heap-snapshot-util.mts';
+import type { MemoryReport } from './backend-diagnostics.inspect.mts';
+
+const [baseFile, headFile, outputFile] = process.argv.slice(2);
+
+const memoryReportPhases = [
+	{
+		key: 'afterGc',
+		title: 'After GC',
+	},
+] as const;
+
+const memoryMetrics = [
+	'HeapUsed',
+	'Pss',
+	'USS',
+	'External',
+] as const;
+
+function formatMemoryMb(valueKiB: number | null | undefined) {
+	if (valueKiB == null) return '-';
+	return `${util.formatNumber(valueKiB / 1000)} MB`;
+}
+
+function formatMemoryMetricName(metric: typeof memoryMetrics[number]) {
+	return metric === 'Pss' ? 'PSS' : metric;
+}
+
+function getMemoryValueFromSample(sample: MemoryReport['samples'][number], phase: typeof memoryReportPhases[number]['key'], metric: typeof memoryMetrics[number]) {
+	const memoryUsage = sample.phases[phase].memoryUsage;
+	if (metric !== 'USS') return memoryUsage[metric];
+	return memoryUsage.Private_Clean + memoryUsage.Private_Dirty;
+}
+
+function getSampleValues(report: MemoryReport, phase: typeof memoryReportPhases[number]['key'], metric: typeof memoryMetrics[number]) {
+	return report.samples.map(sample => getMemoryValueFromSample(sample, phase, metric));
+}
+
+function getMemoryValue(report: MemoryReport, phase: typeof memoryReportPhases[number]['key'], metric: typeof memoryMetrics[number]) {
+	if (metric !== 'USS') return report.summary[phase].memoryUsage[metric];
+	return util.median(getSampleValues(report, phase, metric));
+}
+
+function getSampleSpread(report: MemoryReport, phase: typeof memoryReportPhases[number]['key'], metric: typeof memoryMetrics[number]) {
+	const values = getSampleValues(report, phase, metric);
+	if (values.length < 2) return null;
+
+	const center = util.median(values);
+	return util.median(values.map(value => Math.abs(value - center)));
+}
+
+function renderMainTableForPhase(base: MemoryReport, head: MemoryReport, phase: typeof memoryReportPhases[number]['key']) {
+	const lines = [
+		'| Metric | Base | Head | Δ median | Δ MAD | Δ min | Δ max |',
+		'| --- | ---: | ---: | ---: | ---: | ---: | ---: |',
+	];
+
+	function formatDeltaMemory(deltaKiB: number) {
+		return util.formatColoredDelta(deltaKiB, v => formatMemoryMb(v), 100); // 0.1 MB threshold
+	}
+
+	for (const metric of memoryMetrics) {
+		const baseValue = getMemoryValue(base, phase, metric);
+		const headValue = getMemoryValue(head, phase, metric);
+
+		const baseSpread = getSampleSpread(base, phase, metric);
+		const headSpread = getSampleSpread(head, phase, metric);
+		const summary = util.pairedDeltaSummary(base.samples, head.samples, (sample) => getMemoryValueFromSample(sample, phase, metric));
+		const percent = summary.median * 100 / baseValue;
+		const deltaMedian = `${formatDeltaMemory(summary.median)}<br>${util.formatDeltaPercent(percent, 0.1).replaceAll('\\%', '\\\\%')}`;
+
+		lines.push(`| **${formatMemoryMetricName(metric)}** | ${formatMemoryMb(baseValue)} <br> ± ${formatMemoryMb(baseSpread)} | ${formatMemoryMb(headValue)} <br> ± ${formatMemoryMb(headSpread)} | ${deltaMedian} | ${formatMemoryMb(summary.mad)} | ${formatDeltaMemory(summary.min)} | ${formatDeltaMemory(summary.max)} |`);
+	}
+
+	return lines.join('\n');
+}
+
+function renderHeapSnapshotSection(base: MemoryReport, head: MemoryReport) {
+	const baseHeapSnapshotReport = {
+		summary: base.summary.afterGc.heapSnapshot!,
+		samples: base.samples.map(sample => ({
+			round: sample.round,
+			data: sample.phases.afterGc.heapSnapshot!,
+		})),
+	};
+
+	const headHeapSnapshotReport = {
+		summary: head.summary.afterGc.heapSnapshot!,
+		samples: head.samples.map(sample => ({
+			round: sample.round,
+			data: sample.phases.afterGc.heapSnapshot!,
+		})),
+	};
+
+	const table = heapSnapshotUtil.renderHeapSnapshotTable(baseHeapSnapshotReport, headHeapSnapshotReport);
+	if (table == null) return null;
+
+	const lines = [
+		'### V8 Heap Snapshot Statistics',
+		'',
+		table,
+		'',
+	];
+
+	for (const graph of [
+		//heapSnapshotUtil.renderHeapSnapshotSankey(baseHeapSnapshotReport, 'Base'),
+		//heapSnapshotUtil.renderHeapSnapshotSankey(headHeapSnapshotReport, 'Head'),
+	]) {
+		if (graph == null) continue;
+		lines.push(graph);
+		lines.push('');
+	}
+
+	return lines.join('\n');
+}
+
+const base = JSON.parse(await readFile(baseFile, 'utf8')) as MemoryReport;
+const head = JSON.parse(await readFile(headFile, 'utf8')) as MemoryReport;
+
+const lines = [
+	'## ⚙️ Backend Diagnostics Report',
+	'',
+];
+
+//const summary = measurementSummary(base, head);
+//if (summary != null) {
+//	lines.push(summary);
+//	lines.push('');
+//}
+
+for (const phase of memoryReportPhases) {
+	lines.push(`### Memory: ${phase.title}`);
+	lines.push(renderMainTableForPhase(base, head, phase.key));
+	lines.push('');
+}
+
+const heapSnapshotSection = renderHeapSnapshotSection(base, head);
+if (heapSnapshotSection != null) {
+	lines.push(heapSnapshotSection);
+	lines.push('');
+}
+
+const baseHeapSnapshotArtifactUrl = process.env.MK_MEMORY_HEAP_SNAPSHOT_ARTIFACT_URL_BASE!.trim();
+const headHeapSnapshotArtifactUrl = process.env.MK_MEMORY_HEAP_SNAPSHOT_ARTIFACT_URL_HEAD!.trim();
+lines.push(`Download representative heap snapshot: [base](${baseHeapSnapshotArtifactUrl}) / [head](${headHeapSnapshotArtifactUrl})`);
+lines.push('');
+
+function getDiffPercent(base: MemoryReport, head: MemoryReport, phase: typeof memoryReportPhases[number]['key'], metric: typeof memoryMetrics[number]) {
+	const baseValue = getMemoryValue(base, phase, metric);
+	const headValue = getMemoryValue(head, phase, metric);
+	return ((headValue - baseValue) * 100) / baseValue;
+}
+
+function isBeyondSampleNoise(base: MemoryReport, head: MemoryReport, phase: typeof memoryReportPhases[number]['key'], metric: typeof memoryMetrics[number]) {
+	const baseValue = getMemoryValue(base, phase, metric);
+	const headValue = getMemoryValue(head, phase, metric);
+
+	const delta = headValue - baseValue;
+	if (delta <= 0) return false;
+
+	const baseSpread = getSampleSpread(base, phase, metric);
+	const headSpread = getSampleSpread(head, phase, metric);
+	if (baseSpread == null || headSpread == null) return true;
+
+	const combinedSpread = Math.hypot(baseSpread, headSpread);
+	return delta > combinedSpread * 3;
+}
+
+const warningMetric = 'Pss';
+const warningDiffPercent = getDiffPercent(base, head, 'afterGc', warningMetric);
+if (warningDiffPercent > 5 && isBeyondSampleNoise(base, head, 'afterGc', warningMetric)) {
+	lines.push(`⚠️ **Warning**: Memory usage (${formatMemoryMetricName(warningMetric)}) has increased by more than 5% and exceeds the observed sample noise. Please verify this is not an unintended change.`);
+	lines.push('');
+}
+
+await writeFile(outputFile, `${lines.join('\n')}\n`);

.github/scripts/chrome.mts

@@ -0,0 +1,570 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { createRequire } from 'node:module';
+import { writeFile } from 'node:fs/promises';
+import type { Browser, BrowserContext, CDPSession, Page } from 'playwright';
+import type { HeapSnapshotData } from './heap-snapshot-util.mts';
+import * as util from './utility.mts';
+
+export type NetworkRequest = {
+	requestId: string;
+	url: string;
+	method: string;
+	resourceType: string;
+	startedAt: number;
+	documentUrl?: string;
+	requestHeaders?: Record<string, string>;
+	requestBody?: string;
+	hasRequestBody: boolean;
+	status?: number;
+	statusText?: string;
+	mimeType?: string;
+	responseHeaders?: Record<string, string>;
+	protocol?: string;
+	remoteIPAddress?: string;
+	remotePort?: number;
+	encodedDataLength: number;
+	decodedBodyLength: number;
+	fromDiskCache: boolean;
+	fromServiceWorker: boolean;
+	finished: boolean;
+	failed: boolean;
+	errorText?: string;
+};
+
+export type WebSocketConnection = {
+	requestId: string;
+	url: string;
+	createdAt: number;
+	handshakeRequestHeaders?: Record<string, string>;
+	handshakeResponseStatus?: number;
+	handshakeResponseStatusText?: string;
+	handshakeResponseHeaders?: Record<string, string>;
+	closedAt?: number;
+	sentFrameCount: number;
+	receivedFrameCount: number;
+	sentBytes: number;
+	receivedBytes: number;
+	errorCount: number;
+};
+
+export type NetworkSummary = {
+	requestCount: number;
+	webSocketConnectionCount: number;
+	webSocketSentBytes: number;
+	webSocketReceivedBytes: number;
+	finishedRequestCount: number;
+	failedRequestCount: number;
+	cachedRequestCount: number;
+	serviceWorkerRequestCount: number;
+	totalEncodedBytes: number;
+	totalDecodedBodyBytes: number;
+	sameOriginEncodedBytes: number;
+	thirdPartyEncodedBytes: number;
+	byResourceType: Record<string, {
+		requests: number;
+		encodedBytes: number;
+		decodedBodyBytes: number;
+	}>;
+	largestRequests: {
+		url: string;
+		method: string;
+		resourceType: string;
+		status?: number;
+		encodedBytes: number;
+		decodedBodyBytes: number;
+	}[];
+	failedRequests: {
+		url: string;
+		method: string;
+		resourceType: string;
+		errorText?: string;
+		status?: number;
+	}[];
+};
+
+export type TabMemory = {
+	totalBytes: number;
+};
+
+export type BrowserDiagnostics = {
+	pageErrorCount: number;
+	console: Record<'log' | 'warning' | 'error' | 'info', number>;
+};
+
+export function summarizeBrowserDiagnostics(samples: BrowserDiagnostics[]): BrowserDiagnostics {
+	const median = (select: (sample: BrowserDiagnostics) => number) => util.median(samples.map(select));
+
+	return {
+		pageErrorCount: median(sample => sample.pageErrorCount),
+		console: {
+			log: median(sample => sample.console.log),
+			warning: median(sample => sample.console.warning),
+			error: median(sample => sample.console.error),
+			info: median(sample => sample.console.info),
+		},
+	};
+}
+
+export type BrowserMeasurement = {
+	label: string;
+	timestamp: string;
+	url: string;
+	scenario: string;
+	diagnostics: BrowserDiagnostics;
+	durationMs: number;
+	network: NetworkSummary;
+	performance: {
+		cdpMetrics: Record<string, number>;
+		runtimeHeap?: {
+			usedSize: number;
+			totalSize: number;
+		};
+		tabMemory: TabMemory;
+		webVitals: {
+			firstPaintMs?: number;
+			firstContentfulPaintMs?: number;
+			domContentLoadedEventEndMs?: number;
+			loadEventEndMs?: number;
+			longTaskCount: number;
+			longTaskDurationMs: number;
+			maxLongTaskDurationMs: number;
+			resourceEntryCount: number;
+			domElements: number;
+		};
+	};
+	heapSnapshot: HeapSnapshotData;
+};
+
+type PlaywrightModule = typeof import('playwright');
+
+const requireFromFrontend = createRequire(new URL('../../packages/frontend/package.json', import.meta.url));
+
+function loadPlaywright(): PlaywrightModule {
+	return requireFromFrontend('playwright') as PlaywrightModule;
+}
+
+function normalizeHeaders(headers: Record<string, unknown> | undefined) {
+	if (headers == null) return undefined;
+	const normalized = {} as Record<string, string>;
+	for (const [key, value] of Object.entries(headers)) {
+		normalized[key] = String(value);
+	}
+	return normalized;
+}
+
+function webSocketFramePayloadBytes(frame: { opcode?: number; payloadData?: string } | undefined) {
+	if (frame?.payloadData == null) return 0;
+	if (frame.opcode === 1) return Buffer.byteLength(frame.payloadData, 'utf8');
+	return Buffer.byteLength(frame.payloadData, 'base64');
+}
+
+type PlaywrightBrowserOptions = {
+	scenarioTimeoutMs: number;
+	baseUrl: string;
+};
+
+export class HeadlessChromeController {
+	public networkRequests: NetworkRequest[] = [];
+	public webSocketConnections: WebSocketConnection[] = [];
+	private readonly diagnostics = {
+		pageErrorCount: 0,
+		console: {} as Record<string, number | undefined>,
+	};
+	private readonly browser: Browser;
+	private readonly context: BrowserContext;
+	public readonly page: Page;
+	private readonly cdp: CDPSession;
+	private pendingNetworkDetailReads: Promise<void>[] = [];
+
+	private constructor(
+		browser: Browser,
+		context: BrowserContext,
+		page: Page,
+		cdp: CDPSession,
+		options: PlaywrightBrowserOptions,
+	) {
+		this.browser = browser;
+		this.context = context;
+		this.page = page;
+		this.cdp = cdp;
+		this.page.setDefaultTimeout(options.scenarioTimeoutMs);
+		this.page.setDefaultNavigationTimeout(options.scenarioTimeoutMs);
+		this.page.on('pageerror', () => {
+			this.diagnostics.pageErrorCount++;
+		});
+		this.page.on('console', message => {
+			if (this.diagnostics.console[message.type()] == null) {
+				this.diagnostics.console[message.type()] = 1;
+			} else {
+				this.diagnostics.console[message.type()]++;
+			}
+		});
+	}
+
+	static async create(label: string, options: PlaywrightBrowserOptions): Promise<HeadlessChromeController> {
+		process.stderr.write(`[${label}] Launching Playwright Chromium\n`);
+		const { chromium } = loadPlaywright();
+		const browser = await chromium.launch({
+			channel: 'chromium',
+			headless: true,
+			args: [
+				'--disable-gpu',
+				'--disable-dev-shm-usage',
+				'--disable-background-networking',
+				'--disable-default-apps',
+				'--disable-extensions',
+				'--disable-sync',
+				'--metrics-recording-only',
+				'--no-first-run',
+				'--no-default-browser-check',
+				'--no-sandbox',
+			],
+		});
+
+		try {
+			const context = await browser.newContext({
+				baseURL: options.baseUrl,
+				locale: 'en-US',
+			});
+			await context.addInitScript(() => {
+				// @ts-expect-error Test-only runtime hint consumed by Misskey frontend code.
+				window.isPlaywright = true;
+			});
+
+			const page = await context.newPage();
+			const cdp = await context.newCDPSession(page);
+			return new HeadlessChromeController(browser, context, page, cdp, options);
+		} catch (error) {
+			await browser.close().catch(() => undefined);
+			throw error;
+		}
+	}
+
+	static async with<T>(label: string, options: PlaywrightBrowserOptions, callback: (browser: HeadlessChromeController) => T | Promise<T>): Promise<T> {
+		const browser = await HeadlessChromeController.create(label, options);
+		try {
+			return await callback(browser);
+		} finally {
+			await browser.close();
+		}
+	}
+
+	public async enableNetworkTracking() {
+		const requests = new Map<string, NetworkRequest>();
+		const webSockets = new Map<string, WebSocketConnection>();
+
+		const readRequestBody = (row: NetworkRequest) => {
+			if (!row.hasRequestBody || row.requestBody != null) return;
+			const pending = this.cdp.send<{ postData: string }>('Network.getRequestPostData', {
+				requestId: row.requestId,
+			}).then(result => {
+				row.requestBody = result.postData;
+			}).catch(() => {
+				// Some requests expose hasPostData but no longer have retrievable body data.
+			});
+			this.pendingNetworkDetailReads.push(pending);
+		};
+
+		this.cdp.on('Network.requestWillBeSent', params => {
+			if (params.request?.url == null) return;
+			const row: NetworkRequest = {
+				requestId: params.requestId,
+				url: params.request.url,
+				method: params.request.method ?? 'GET',
+				resourceType: params.type ?? 'Other',
+				startedAt: params.timestamp ?? 0,
+				documentUrl: params.documentURL,
+				requestHeaders: normalizeHeaders(params.request.headers),
+				requestBody: typeof params.request.postData === 'string' ? params.request.postData : undefined,
+				hasRequestBody: params.request.hasPostData === true || typeof params.request.postData === 'string',
+				encodedDataLength: 0,
+				decodedBodyLength: 0,
+				fromDiskCache: false,
+				fromServiceWorker: false,
+				finished: false,
+				failed: false,
+			};
+			requests.set(params.requestId, row);
+			this.networkRequests.push(row);
+		});
+
+		this.cdp.on('Network.webSocketCreated', params => {
+			if (params.requestId == null || params.url == null) return;
+			const row: WebSocketConnection = {
+				requestId: params.requestId,
+				url: params.url,
+				createdAt: params.timestamp ?? 0,
+				sentFrameCount: 0,
+				receivedFrameCount: 0,
+				sentBytes: 0,
+				receivedBytes: 0,
+				errorCount: 0,
+			};
+			webSockets.set(params.requestId, row);
+			this.webSocketConnections.push(row);
+		});
+
+		this.cdp.on('Network.webSocketWillSendHandshakeRequest', params => {
+			const row = webSockets.get(params.requestId);
+			if (row == null) return;
+			row.handshakeRequestHeaders = normalizeHeaders(params.request?.headers);
+		});
+
+		this.cdp.on('Network.webSocketHandshakeResponseReceived', params => {
+			const row = webSockets.get(params.requestId);
+			if (row == null) return;
+			row.handshakeResponseStatus = params.response?.status;
+			row.handshakeResponseStatusText = params.response?.statusText;
+			row.handshakeResponseHeaders = normalizeHeaders(params.response?.headers);
+		});
+
+		this.cdp.on('Network.webSocketFrameSent', params => {
+			const row = webSockets.get(params.requestId);
+			if (row == null) return;
+			row.sentFrameCount += 1;
+			row.sentBytes += webSocketFramePayloadBytes(params.response);
+		});
+
+		this.cdp.on('Network.webSocketFrameReceived', params => {
+			const row = webSockets.get(params.requestId);
+			if (row == null) return;
+			row.receivedFrameCount += 1;
+			row.receivedBytes += webSocketFramePayloadBytes(params.response);
+		});
+
+		this.cdp.on('Network.webSocketFrameError', params => {
+			const row = webSockets.get(params.requestId);
+			if (row == null) return;
+			row.errorCount += 1;
+		});
+
+		this.cdp.on('Network.webSocketClosed', params => {
+			const row = webSockets.get(params.requestId);
+			if (row == null) return;
+			row.closedAt = params.timestamp ?? 0;
+		});
+
+		this.cdp.on('Network.responseReceived', params => {
+			const row = requests.get(params.requestId);
+			if (row == null) return;
+			row.status = params.response?.status;
+			row.statusText = params.response?.statusText;
+			row.mimeType = params.response?.mimeType;
+			row.responseHeaders = normalizeHeaders(params.response?.headers);
+			row.protocol = params.response?.protocol;
+			row.remoteIPAddress = params.response?.remoteIPAddress;
+			row.remotePort = params.response?.remotePort;
+			row.requestHeaders ??= normalizeHeaders(params.response?.requestHeaders);
+			row.fromDiskCache = params.response?.fromDiskCache === true;
+			row.fromServiceWorker = params.response?.fromServiceWorker === true;
+		});
+
+		this.cdp.on('Network.dataReceived', params => {
+			const row = requests.get(params.requestId);
+			if (row == null) return;
+			row.decodedBodyLength += params.dataLength ?? 0;
+			row.encodedDataLength += params.encodedDataLength ?? 0;
+		});
+
+		this.cdp.on('Network.loadingFinished', params => {
+			const row = requests.get(params.requestId);
+			if (row == null) return;
+			row.finished = true;
+			row.encodedDataLength = Math.max(row.encodedDataLength, params.encodedDataLength ?? 0);
+			readRequestBody(row);
+		});
+
+		this.cdp.on('Network.loadingFailed', params => {
+			const row = requests.get(params.requestId);
+			if (row == null) return;
+			row.failed = true;
+			row.finished = true;
+			row.errorText = params.errorText;
+			readRequestBody(row);
+		});
+
+		await this.cdp.send('Network.enable');
+		await this.cdp.send('Network.setCacheDisabled', { cacheDisabled: true });
+		await this.cdp.send('Network.setBypassServiceWorker', { bypass: true });
+		await this.cdp.send('Page.enable');
+		await this.cdp.send('Runtime.enable');
+		await this.cdp.send('Performance.enable');
+	}
+
+	public async waitForNetworkDetails() {
+		let settledCount = 0;
+		while (settledCount < this.pendingNetworkDetailReads.length) {
+			const pending = this.pendingNetworkDetailReads.slice(settledCount);
+			settledCount = this.pendingNetworkDetailReads.length;
+			await Promise.allSettled(pending);
+		}
+	}
+
+	public async evaluate<T>(expression: string, timeoutMs = 30_000): Promise<T> {
+		return await Promise.race([
+			this.page.evaluate(expression),
+			new Promise<never>((_, reject) => setTimeout(() => reject(new Error(`Playwright evaluate timed out after ${timeoutMs}ms`)), timeoutMs).unref()),
+		]) as T;
+	}
+
+	public collectDiagnostics(): BrowserDiagnostics {
+		return {
+			pageErrorCount: this.diagnostics.pageErrorCount,
+			console: {
+				log: this.diagnostics.console.log ?? 0,
+				warning: this.diagnostics.console.warning ?? 0,
+				error: this.diagnostics.console.error ?? 0,
+				info: this.diagnostics.console.info ?? 0,
+			},
+		};
+	}
+
+	public async collectPerformance(): Promise<BrowserMeasurement['performance']> {
+		const cdpMetricsResult = await this.cdp.send<{ metrics: { name: string; value: number }[] }>('Performance.getMetrics');
+		const cdpMetrics = Object.fromEntries(cdpMetricsResult.metrics.map(metric => [metric.name, metric.value]));
+		const runtimeHeap = await this.cdp.send<{ usedSize: number; totalSize: number }>('Runtime.getHeapUsage').catch(() => undefined);
+		const tabMemory = await this.collectTabMemory();
+		const webVitals = await this.evaluate<BrowserMeasurement['performance']['webVitals']>(`(() => {
+			const navigation = performance.getEntriesByType('navigation')[0];
+			const paintEntries = Object.fromEntries(performance.getEntriesByType('paint').map(entry => [entry.name, entry.startTime]));
+			const longTasks = performance.getEntriesByType('longtask');
+			const resourceEntries = performance.getEntriesByType('resource');
+			return {
+				firstPaintMs: paintEntries['first-paint'],
+				firstContentfulPaintMs: paintEntries['first-contentful-paint'],
+				domContentLoadedEventEndMs: navigation?.domContentLoadedEventEnd,
+				loadEventEndMs: navigation?.loadEventEnd,
+				longTaskCount: longTasks.length,
+				longTaskDurationMs: longTasks.reduce((sum, entry) => sum + entry.duration, 0),
+				maxLongTaskDurationMs: longTasks.reduce((max, entry) => Math.max(max, entry.duration), 0),
+				resourceEntryCount: resourceEntries.length,
+				domElements: document.getElementsByTagName('*').length,
+			};
+		})()`);
+
+		return {
+			cdpMetrics,
+			runtimeHeap,
+			tabMemory,
+			webVitals,
+		};
+	}
+
+	public async collectTabMemory(): Promise<TabMemory> {
+		const userAgentSpecificMemory = await this.evaluate<{ bytes?: number }>(`(async () => {
+			const measureMemory = performance.measureUserAgentSpecificMemory;
+			if (typeof measureMemory !== 'function') return {};
+			const result = await measureMemory.call(performance);
+			return { bytes: result.bytes };
+		})()`, 60_000);
+
+		const userAgentSpecificBytes = userAgentSpecificMemory?.bytes;
+		if (!Number.isFinite(userAgentSpecificBytes)) {
+			throw new Error('performance.measureUserAgentSpecificMemory() did not return finite bytes');
+		}
+
+		return {
+			totalBytes: userAgentSpecificBytes as number,
+		};
+	}
+
+	public async takeHeapSnapshot(savePath?: string) {
+		const chunks: string[] = [];
+		this.cdp.on('HeapProfiler.addHeapSnapshotChunk', params => {
+			chunks.push(params.chunk);
+		});
+
+		await this.cdp.send('HeapProfiler.enable');
+		await this.cdp.send('HeapProfiler.collectGarbage');
+		await this.cdp.send('HeapProfiler.takeHeapSnapshot', { reportProgress: false });
+
+		const content = chunks.join('');
+		if (savePath != null) {
+			await writeFile(savePath, content);
+		}
+
+		return JSON.parse(content);
+	}
+
+	public async close() {
+		await this.cdp.detach().catch(() => undefined);
+		await this.context.close().catch(() => undefined);
+		await this.browser.close().catch(() => undefined);
+	}
+}
+
+function isMeasurableRequest(row: NetworkRequest) {
+	return !row.url.startsWith('data:') && !row.url.startsWith('blob:') && !row.url.startsWith('devtools:');
+}
+
+export function summarizeNetwork(requestRows: NetworkRequest[], baseUrl: string, webSocketRows?: WebSocketConnection[]): NetworkSummary {
+	const origin = new URL(baseUrl).origin;
+	const rows = requestRows.filter(isMeasurableRequest);
+	const byResourceType = {} as NetworkSummary['byResourceType'];
+
+	for (const row of rows) {
+		const summary = byResourceType[row.resourceType] ?? {
+			requests: 0,
+			encodedBytes: 0,
+			decodedBodyBytes: 0,
+		};
+		summary.requests += 1;
+		summary.encodedBytes += row.encodedDataLength;
+		summary.decodedBodyBytes += row.decodedBodyLength;
+		byResourceType[row.resourceType] = summary;
+	}
+
+	function isSameOrigin(url: string) {
+		try {
+			return new URL(url).origin === origin;
+		} catch {
+			return false;
+		}
+	}
+
+	return {
+		requestCount: rows.length,
+		webSocketConnectionCount: webSocketRows == null
+			? rows.filter(row => row.resourceType === 'WebSocket').length
+			: webSocketRows.length,
+		webSocketSentBytes: webSocketRows?.reduce((sum, row) => sum + row.sentBytes, 0) ?? 0,
+		webSocketReceivedBytes: webSocketRows?.reduce((sum, row) => sum + row.receivedBytes, 0) ?? 0,
+		finishedRequestCount: rows.filter(row => row.finished).length,
+		failedRequestCount: rows.filter(row => row.failed).length,
+		cachedRequestCount: rows.filter(row => row.fromDiskCache).length,
+		serviceWorkerRequestCount: rows.filter(row => row.fromServiceWorker).length,
+		totalEncodedBytes: rows.reduce((sum, row) => sum + row.encodedDataLength, 0),
+		totalDecodedBodyBytes: rows.reduce((sum, row) => sum + row.decodedBodyLength, 0),
+		sameOriginEncodedBytes: rows
+			.filter(row => isSameOrigin(row.url))
+			.reduce((sum, row) => sum + row.encodedDataLength, 0),
+		thirdPartyEncodedBytes: rows
+			.filter(row => !isSameOrigin(row.url))
+			.reduce((sum, row) => sum + row.encodedDataLength, 0),
+		byResourceType,
+		largestRequests: rows
+			.toSorted((a, b) => b.encodedDataLength - a.encodedDataLength)
+			.slice(0, 15)
+			.map(row => ({
+				url: row.url,
+				method: row.method,
+				resourceType: row.resourceType,
+				status: row.status,
+				encodedBytes: row.encodedDataLength,
+				decodedBodyBytes: row.decodedBodyLength,
+			})),
+		failedRequests: rows
+			.filter(row => row.failed)
+			.map(row => ({
+				url: row.url,
+				method: row.method,
+				resourceType: row.resourceType,
+				errorText: row.errorText,
+				status: row.status,
+			})),
+	};
+}

.github/scripts/frontend-browser-diagnostics.inspect.mts

@@ -0,0 +1,279 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { copyFile, mkdir, rm, writeFile } from 'node:fs/promises';
+import { join, resolve } from 'node:path';
+import * as util from './utility.mts';
+import * as heapSnapshotUtil from './heap-snapshot-util.mts';
+import { HeadlessChromeController, summarizeBrowserDiagnostics, summarizeNetwork } from './chrome.mts';
+import type { BrowserMeasurement, NetworkRequest, NetworkSummary } from './chrome.mts';
+import { closeUserSetupDialog, postNote, signupThroughUi, visitHome } from '../../packages/frontend/test/e2e/shared.ts';
+
+const [baseDirArg, headDirArg, baseOutputArg, headOutputArg] = process.argv.slice(2);
+
+const baseUrl = process.env.FRONTEND_BROWSER_METRICS_URL ?? 'http://127.0.0.1:61812';
+const sampleCount = util.readIntegerEnv('FRONTEND_BROWSER_METRICS_SAMPLE_COUNT', 5, 1);
+const heapSnapshotBreakdownTopN = util.readIntegerEnv('FRONTEND_BROWSER_HEAP_SNAPSHOT_BREAKDOWN_TOP_N', heapSnapshotUtil.defaultHeapSnapshotBreakdownTopN, 1);
+const heapSnapshotWorkDirs = {
+	base: resolve('frontend-browser-base-heap-snapshots'),
+	head: resolve('frontend-browser-head-heap-snapshots'),
+} as const;
+const heapSnapshotOutputPaths = {
+	base: resolve('base-heap-snapshot.heapsnapshot'),
+	head: resolve('head-heap-snapshot.heapsnapshot'),
+} as const;
+
+type BrowserMeasurementSample = BrowserMeasurement & {
+	round: number;
+	networkRequests: NetworkRequest[];
+};
+
+type BrowserMetricsReport = {
+	label: string;
+	timestamp: string;
+	url: string;
+	scenario: string;
+	sampleCount: number;
+	aggregation: 'median';
+	summary: BrowserMeasurement;
+	samples: BrowserMeasurementSample[];
+};
+
+async function runSignupAndPostScenario(chrome: HeadlessChromeController) {
+	const page = chrome.page;
+	const noteText = `Frontend browser metrics ${Date.now()}`;
+
+	await visitHome(page, baseUrl);
+	await signupThroughUi(page, { username: 'alice', password: 'password' });
+	await closeUserSetupDialog(page);
+	await postNote(page, noteText, 10_000);
+
+	await util.sleep(1000);
+}
+
+function finiteMedian(values: (number | null | undefined)[], defaultValue = 0) {
+	const finiteValues = values.filter(value => Number.isFinite(value)) as number[];
+	if (finiteValues.length === 0) return defaultValue;
+	return util.median(finiteValues);
+}
+
+function selectRepresentativeSample(samples: BrowserMeasurementSample[], getValue: (sample: BrowserMeasurementSample) => number) {
+	const medianValue = finiteMedian(samples.map(getValue));
+	let selected: { sample: BrowserMeasurementSample; distance: number } | null = null;
+
+	for (const sample of samples) {
+		const value = getValue(sample);
+		if (!Number.isFinite(value)) continue;
+		const distance = Math.abs(value - medianValue);
+		if (selected == null || distance < selected.distance || (distance === selected.distance && sample.round < selected.sample.round)) {
+			selected = {
+				sample,
+				distance,
+			};
+		}
+	}
+
+	return selected?.sample ?? samples[0];
+}
+
+function summarizeResourceType(samples: BrowserMeasurementSample[], resourceType: string) {
+	return {
+		requests: finiteMedian(samples.map(sample => sample.network.byResourceType[resourceType]?.requests)),
+		encodedBytes: finiteMedian(samples.map(sample => sample.network.byResourceType[resourceType]?.encodedBytes)),
+		decodedBodyBytes: finiteMedian(samples.map(sample => sample.network.byResourceType[resourceType]?.decodedBodyBytes)),
+	};
+}
+
+function summarizeNetworkSamples(samples: BrowserMeasurementSample[]): NetworkSummary {
+	const resourceTypes = new Set<string>();
+	for (const sample of samples) {
+		for (const resourceType of Object.keys(sample.network.byResourceType)) {
+			resourceTypes.add(resourceType);
+		}
+	}
+
+	const representative = selectRepresentativeSample(samples, sample => sample.network.totalEncodedBytes);
+	const byResourceType = {} as NetworkSummary['byResourceType'];
+	for (const resourceType of resourceTypes) {
+		byResourceType[resourceType] = summarizeResourceType(samples, resourceType);
+	}
+
+	return {
+		requestCount: finiteMedian(samples.map(sample => sample.network.requestCount)),
+		webSocketConnectionCount: finiteMedian(samples.map(sample => sample.network.webSocketConnectionCount)),
+		webSocketSentBytes: finiteMedian(samples.map(sample => sample.network.webSocketSentBytes)),
+		webSocketReceivedBytes: finiteMedian(samples.map(sample => sample.network.webSocketReceivedBytes)),
+		finishedRequestCount: finiteMedian(samples.map(sample => sample.network.finishedRequestCount)),
+		failedRequestCount: finiteMedian(samples.map(sample => sample.network.failedRequestCount)),
+		cachedRequestCount: finiteMedian(samples.map(sample => sample.network.cachedRequestCount)),
+		serviceWorkerRequestCount: finiteMedian(samples.map(sample => sample.network.serviceWorkerRequestCount)),
+		totalEncodedBytes: finiteMedian(samples.map(sample => sample.network.totalEncodedBytes)),
+		totalDecodedBodyBytes: finiteMedian(samples.map(sample => sample.network.totalDecodedBodyBytes)),
+		sameOriginEncodedBytes: finiteMedian(samples.map(sample => sample.network.sameOriginEncodedBytes)),
+		thirdPartyEncodedBytes: finiteMedian(samples.map(sample => sample.network.thirdPartyEncodedBytes)),
+		byResourceType,
+		largestRequests: representative.network.largestRequests,
+		failedRequests: representative.network.failedRequests,
+	};
+}
+
+function summarizePerformanceSamples(samples: BrowserMeasurementSample[]): BrowserMeasurement['performance'] {
+	const cdpMetricKeys = new Set<string>();
+	for (const sample of samples) {
+		for (const key of Object.keys(sample.performance.cdpMetrics)) {
+			cdpMetricKeys.add(key);
+		}
+	}
+
+	const cdpMetrics = {} as Record<string, number>;
+	for (const key of cdpMetricKeys) {
+		cdpMetrics[key] = finiteMedian(samples.map(sample => sample.performance.cdpMetrics[key]));
+	}
+
+	const webVitalKeys = [
+		'firstPaintMs',
+		'firstContentfulPaintMs',
+		'domContentLoadedEventEndMs',
+		'loadEventEndMs',
+		'longTaskCount',
+		'longTaskDurationMs',
+		'maxLongTaskDurationMs',
+		'resourceEntryCount',
+		'domElements',
+	] as const satisfies (keyof BrowserMeasurement['performance']['webVitals'])[];
+
+	const webVitals = {} as BrowserMeasurement['performance']['webVitals'];
+	for (const key of webVitalKeys) {
+		webVitals[key] = finiteMedian(samples.map(sample => sample.performance.webVitals[key]));
+	}
+
+	return {
+		cdpMetrics,
+		runtimeHeap: {
+			usedSize: finiteMedian(samples.map(sample => sample.performance.runtimeHeap?.usedSize)),
+			totalSize: finiteMedian(samples.map(sample => sample.performance.runtimeHeap?.totalSize)),
+		},
+		tabMemory: {
+			totalBytes: finiteMedian(samples.map(sample => sample.performance.tabMemory.totalBytes)),
+		},
+		webVitals,
+	};
+}
+
+function summarizeHeapSnapshotSamples(samples: BrowserMeasurementSample[]) {
+	const summary = heapSnapshotUtil.summarizeHeapSnapshotDataSamples(
+		samples,
+		sample => sample.heapSnapshot,
+		{ breakdownTopN: heapSnapshotBreakdownTopN },
+	);
+	if (summary == null) throw new Error('No heap snapshot samples');
+	return summary;
+}
+
+function summarizeSamples(label: 'base' | 'head', samples: BrowserMeasurementSample[]): BrowserMetricsReport {
+	if (samples.length === 0) throw new Error(`No browser metric samples for ${label}`);
+	const representative = selectRepresentativeSample(samples, sample => sample.network.totalEncodedBytes);
+	const summary: BrowserMeasurement = {
+		label,
+		timestamp: new Date().toISOString(),
+		url: baseUrl,
+		scenario: representative.scenario,
+		diagnostics: summarizeBrowserDiagnostics(samples.map(sample => sample.diagnostics)),
+		durationMs: finiteMedian(samples.map(sample => sample.durationMs)),
+		network: summarizeNetworkSamples(samples),
+		performance: summarizePerformanceSamples(samples),
+		heapSnapshot: summarizeHeapSnapshotSamples(samples),
+	};
+
+	return {
+		label,
+		timestamp: new Date().toISOString(),
+		url: baseUrl,
+		scenario: representative.scenario,
+		sampleCount: samples.length,
+		aggregation: 'median',
+		summary,
+		samples,
+	};
+}
+
+async function measureSample(label: 'base' | 'head', round: number, heapSnapshotSavePath?: string) {
+	await util.prepareInstance(baseUrl);
+
+	return await HeadlessChromeController.with(label, { scenarioTimeoutMs: 120000, baseUrl }, async chrome => {
+		await chrome.enableNetworkTracking();
+
+		const startedAt = Date.now();
+		await runSignupAndPostScenario(chrome);
+		const durationMs = Date.now() - startedAt;
+		await chrome.waitForNetworkDetails();
+		const performance = await chrome.collectPerformance();
+		const heapSnapshotRaw = await chrome.takeHeapSnapshot(heapSnapshotSavePath);
+		const heapSnapshot = heapSnapshotUtil.analyzeHeapSnapshot(heapSnapshotRaw, { breakdownTopN: heapSnapshotBreakdownTopN });
+		const measurement: BrowserMeasurementSample = {
+			label,
+			round,
+			timestamp: new Date().toISOString(),
+			url: baseUrl,
+			scenario: 'fresh browser signup, first timeline note, after the note becomes visible',
+			diagnostics: chrome.collectDiagnostics(),
+			durationMs,
+			network: summarizeNetwork(chrome.networkRequests, baseUrl, chrome.webSocketConnections),
+			networkRequests: chrome.networkRequests,
+			performance,
+			heapSnapshot,
+		};
+
+		return measurement;
+	});
+}
+
+function heapSnapshotPath(label: 'base' | 'head', round: number) {
+	return join(heapSnapshotWorkDirs[label], `round-${round}.heapsnapshot`);
+}
+
+async function saveRepresentativeHeapSnapshot(label: 'base' | 'head', report: BrowserMetricsReport) {
+	const representative = selectRepresentativeSample(report.samples, sample => sample.heapSnapshot.categories.total);
+	await copyFile(heapSnapshotPath(label, representative.round), heapSnapshotOutputPaths[label]);
+	process.stderr.write(`[${label}] Selected round ${representative.round} heap snapshot for artifact\n`);
+	await rm(heapSnapshotWorkDirs[label], { recursive: true, force: true });
+}
+
+async function genReport(label: 'base' | 'head', repoDir: string, outputPath: string) {
+	let server: ReturnType<typeof util.startServer> | null = null;
+
+	try {
+		server = util.startServer(label, repoDir);
+		await util.waitForServer(baseUrl, server);
+
+		await rm(heapSnapshotWorkDirs[label], { recursive: true, force: true });
+		await mkdir(heapSnapshotWorkDirs[label], { recursive: true });
+
+		const samples: BrowserMeasurementSample[] = [];
+		for (let round = 1; round <= sampleCount; round++) {
+			process.stderr.write(`[${label}] Measuring browser metrics sample ${round}/${sampleCount}\n`);
+			samples.push(await measureSample(
+				label,
+				round,
+				heapSnapshotPath(label, round),
+			));
+		}
+
+		const report = summarizeSamples(label, samples);
+		await writeFile(outputPath, JSON.stringify(report, null, '\t'));
+		process.stderr.write(`[${label}] Wrote browser metrics report to ${outputPath}\n`);
+
+		await saveRepresentativeHeapSnapshot(label, report);
+	} finally {
+		if (server != null) await util.stopServer(server);
+	}
+}
+
+async function main() {
+	await genReport('base', resolve(baseDirArg), resolve(baseOutputArg));
+	await genReport('head', resolve(headDirArg), resolve(headOutputArg));
+}
+
+await main();

.github/scripts/frontend-browser-diagnostics.render-additional-html.mts

@@ -0,0 +1,446 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { readFile, writeFile } from 'node:fs/promises';
+import { pathToFileURL } from 'node:url';
+import * as util from './utility.mts';
+import type { BrowserMeasurementSample, BrowserMetricsReport } from './frontend-browser-diagnostics.render-md.mts';
+import type { NetworkRequest } from './chrome.mts';
+
+type DiffDirection = 'added' | 'removed';
+
+type RequestDiff = {
+	direction: DiffDirection;
+	round: number;
+	baseCount: number;
+	headCount: number;
+	request: NetworkRequest;
+};
+
+function escapeHtml(value: unknown) {
+	return String(value ?? '')
+		.replaceAll('&', '&')
+		.replaceAll('<', '&lt;')
+		.replaceAll('>', '&gt;')
+		.replaceAll('"', '&quot;')
+		.replaceAll("'", '&#39;');
+}
+
+function escapeAttribute(value: unknown) {
+	return escapeHtml(value);
+}
+
+function isHttpRequest(request: NetworkRequest) {
+	try {
+		const { protocol } = new URL(request.url);
+		return protocol === 'http:' || protocol === 'https:';
+	} catch {
+		return false;
+	}
+}
+
+function requestKey(request: NetworkRequest) {
+	return [
+		request.method,
+		request.resourceType,
+		request.url,
+	].join('\u0000');
+}
+
+function groupRequests(requests: NetworkRequest[] | undefined) {
+	const grouped = new Map<string, NetworkRequest[]>();
+	for (const request of requests ?? []) {
+		if (!isHttpRequest(request)) continue;
+		const key = requestKey(request);
+		const rows = grouped.get(key) ?? [];
+		rows.push(request);
+		grouped.set(key, rows);
+	}
+	return grouped;
+}
+
+function byRound(samples: BrowserMeasurementSample[]) {
+	return new Map(samples.map(sample => [sample.round, sample]));
+}
+
+function diffRound(round: number, baseSample: BrowserMeasurementSample | undefined, headSample: BrowserMeasurementSample | undefined) {
+	const baseRequests = groupRequests(baseSample?.networkRequests);
+	const headRequests = groupRequests(headSample?.networkRequests);
+	const keys = [...new Set([
+		...baseRequests.keys(),
+		...headRequests.keys(),
+	])].toSorted();
+	const diffs: RequestDiff[] = [];
+
+	for (const key of keys) {
+		const baseRows = baseRequests.get(key) ?? [];
+		const headRows = headRequests.get(key) ?? [];
+		if (headRows.length > baseRows.length) {
+			for (const request of headRows.slice(baseRows.length)) {
+				diffs.push({
+					direction: 'added',
+					round,
+					baseCount: baseRows.length,
+					headCount: headRows.length,
+					request,
+				});
+			}
+		} else if (baseRows.length > headRows.length) {
+			for (const request of baseRows.slice(headRows.length)) {
+				diffs.push({
+					direction: 'removed',
+					round,
+					baseCount: baseRows.length,
+					headCount: headRows.length,
+					request,
+				});
+			}
+		}
+	}
+
+	return diffs;
+}
+
+function diffReports(base: BrowserMetricsReport, head: BrowserMetricsReport) {
+	const baseSamples = byRound(base.samples);
+	const headSamples = byRound(head.samples);
+	const rounds = [...new Set([
+		...baseSamples.keys(),
+		...headSamples.keys(),
+	])].toSorted((a, b) => a - b);
+	return rounds.flatMap(round => diffRound(round, baseSamples.get(round), headSamples.get(round)));
+}
+
+function formatMaybeJson(value: string | undefined) {
+	if (value == null || value === '') return null;
+	try {
+		return JSON.stringify(JSON.parse(value), null, '\t');
+	} catch {
+		return value;
+	}
+}
+
+function formatHeaders(headers: Record<string, string> | undefined) {
+	if (headers == null || Object.keys(headers).length === 0) return null;
+	return JSON.stringify(headers, null, '\t');
+}
+
+function countBy<T extends string>(diffs: RequestDiff[], getKey: (diff: RequestDiff) => T) {
+	const counts = new Map<T, number>();
+	for (const diff of diffs) {
+		counts.set(getKey(diff), (counts.get(getKey(diff)) ?? 0) + 1);
+	}
+	return [...counts].toSorted((a, b) => b[1] - a[1] || a[0].localeCompare(b[0]));
+}
+
+function renderSummary(base: BrowserMetricsReport, head: BrowserMetricsReport, diffs: RequestDiff[]) {
+	const added = diffs.filter(diff => diff.direction === 'added').length;
+	const removed = diffs.filter(diff => diff.direction === 'removed').length;
+	const typeRows = countBy(diffs, diff => diff.request.resourceType).map(([type, count]) => `
+				<tr>
+					<td>${escapeHtml(type)}</td>
+					<td class="num">${util.formatNumber(count)}</td>
+				</tr>`).join('');
+
+	return `
+		<section class="summary">
+			<div>
+				<span class="label">Base samples</span>
+				<strong>${util.formatNumber(base.sampleCount)}</strong>
+			</div>
+			<div>
+				<span class="label">Head samples</span>
+				<strong>${util.formatNumber(head.sampleCount)}</strong>
+			</div>
+			<div>
+				<span class="label">Added in Head</span>
+				<strong class="added-text">${util.formatNumber(added)}</strong>
+			</div>
+			<div>
+				<span class="label">Removed in Head</span>
+				<strong class="removed-text">${util.formatNumber(removed)}</strong>
+			</div>
+		</section>
+		${typeRows === '' ? '' : `
+		<section>
+			<h2>Diffs by Resource Type</h2>
+			<table>
+				<thead><tr><th>Type</th><th>Diff requests</th></tr></thead>
+				<tbody>${typeRows}
+				</tbody>
+			</table>
+		</section>`}`;
+}
+
+function renderDetails(title: string, content: string | null, open = false) {
+	if (content == null || content === '') return '';
+	return `
+			<details${open ? ' open' : ''}>
+				<summary>${escapeHtml(title)}</summary>
+				<pre>${escapeHtml(content)}</pre>
+			</details>`;
+}
+
+function renderRequest(diff: RequestDiff) {
+	const { request } = diff;
+	const requestBody = formatMaybeJson(request.requestBody);
+	const requestHeaders = formatHeaders(request.requestHeaders);
+	const responseHeaders = formatHeaders(request.responseHeaders);
+	const bodyNote = requestBody == null && request.hasRequestBody === true
+		? '<p class="empty">Request body was present but could not be retrieved from CDP.</p>'
+		: '';
+
+	return `
+		<article class="request ${diff.direction}">
+			<header>
+				<span class="badge">${diff.direction === 'added' ? 'Added in Head' : 'Removed in Head'}</span>
+				<span class="method">${escapeHtml(request.method)}</span>
+				<span class="type">${escapeHtml(request.resourceType)}</span>
+				<span class="status">${escapeHtml(request.status ?? '-')}</span>
+			</header>
+			<a class="url" href="${escapeAttribute(request.url)}">${escapeHtml(request.url)}</a>
+			<dl>
+				<div><dt>Round</dt><dd>${util.formatNumber(diff.round)}</dd></div>
+				<div><dt>Base count</dt><dd>${util.formatNumber(diff.baseCount)}</dd></div>
+				<div><dt>Head count</dt><dd>${util.formatNumber(diff.headCount)}</dd></div>
+				<div><dt>Encoded</dt><dd>${util.formatBytes(request.encodedDataLength ?? 0)}</dd></div>
+				<div><dt>Decoded body</dt><dd>${util.formatBytes(request.decodedBodyLength ?? 0)}</dd></div>
+				<div><dt>MIME</dt><dd>${escapeHtml(request.mimeType ?? '-')}</dd></div>
+				<div><dt>Protocol</dt><dd>${escapeHtml(request.protocol ?? '-')}</dd></div>
+				<div><dt>Remote</dt><dd>${escapeHtml(request.remoteIPAddress == null ? '-' : `${request.remoteIPAddress}:${request.remotePort ?? ''}`)}</dd></div>
+				<div><dt>Failed</dt><dd>${request.failed ? escapeHtml(request.errorText ?? 'yes') : 'no'}</dd></div>
+			</dl>
+			${bodyNote}
+			${renderDetails('Request body', requestBody, requestBody != null)}
+			${renderDetails('Request headers', requestHeaders)}
+			${renderDetails('Response headers', responseHeaders)}
+		</article>`;
+}
+
+function renderRound(round: number, diffs: RequestDiff[]) {
+	const added = diffs.filter(diff => diff.direction === 'added').length;
+	const removed = diffs.filter(diff => diff.direction === 'removed').length;
+	return `
+		<section>
+			<h2>Round ${util.formatNumber(round)}</h2>
+			<p>${util.formatNumber(added)} added, ${util.formatNumber(removed)} removed</p>
+			<div class="requests">
+				${diffs.map(renderRequest).join('\n')}
+			</div>
+		</section>`;
+}
+
+function renderHtml(base: BrowserMetricsReport, head: BrowserMetricsReport) {
+	const diffs = diffReports(base, head);
+	const rounds = [...new Set(diffs.map(diff => diff.round))].toSorted((a, b) => a - b);
+	const generatedAt = new Date().toISOString();
+	const content = diffs.length === 0
+		? '<section><p>No added or removed HTTP(S) requests were found in paired samples.</p></section>'
+		: rounds.map(round => renderRound(round, diffs.filter(diff => diff.round === round))).join('\n');
+
+	return `<!doctype html>
+<html lang="en">
+<head>
+	<meta charset="utf-8">
+	<meta name="viewport" content="width=device-width, initial-scale=1">
+	<title>Frontend Browser Network Request Diff</title>
+	<style>
+		:root {
+			color-scheme: light dark;
+			--bg: #f7f7f8;
+			--fg: #202124;
+			--muted: #5f6368;
+			--card: #ffffff;
+			--border: #dfe1e5;
+			--added: #137333;
+			--added-bg: #e6f4ea;
+			--removed: #a50e0e;
+			--removed-bg: #fce8e6;
+		}
+		@media (prefers-color-scheme: dark) {
+			:root {
+				--bg: #111315;
+				--fg: #e8eaed;
+				--muted: #bdc1c6;
+				--card: #1b1d20;
+				--border: #3c4043;
+				--added-bg: #17351f;
+				--removed-bg: #3c1f1d;
+			}
+		}
+		body {
+			margin: 0;
+			font: 14px/1.5 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
+			background: var(--bg);
+			color: var(--fg);
+		}
+		main {
+			max-width: 1200px;
+			margin: 0 auto;
+			padding: 24px;
+		}
+		h1 {
+			font-size: 24px;
+			margin: 0 0 8px;
+		}
+		h2 {
+			font-size: 18px;
+			margin: 32px 0 8px;
+		}
+		.meta {
+			color: var(--muted);
+			margin: 0 0 24px;
+		}
+		.summary {
+			display: grid;
+			grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
+			gap: 12px;
+			margin: 24px 0;
+		}
+		.summary > div, .request, table {
+			background: var(--card);
+			border: 1px solid var(--border);
+			border-radius: 8px;
+		}
+		.summary > div {
+			padding: 14px;
+		}
+		.label {
+			display: block;
+			color: var(--muted);
+			font-size: 12px;
+		}
+		.summary strong {
+			display: block;
+			font-size: 24px;
+			margin-top: 4px;
+		}
+		.added-text {
+			color: var(--added);
+		}
+		.removed-text {
+			color: var(--removed);
+		}
+		table {
+			border-collapse: collapse;
+			width: 100%;
+			overflow: hidden;
+		}
+		th, td {
+			border-bottom: 1px solid var(--border);
+			padding: 8px 10px;
+			text-align: left;
+		}
+		th {
+			color: var(--muted);
+			font-weight: 600;
+		}
+		.num {
+			text-align: right;
+		}
+		.requests {
+			display: grid;
+			gap: 12px;
+		}
+		.request {
+			padding: 14px;
+			overflow-wrap: anywhere;
+		}
+		.request.added {
+			border-left: 4px solid var(--added);
+		}
+		.request.removed {
+			border-left: 4px solid var(--removed);
+		}
+		.request header {
+			display: flex;
+			flex-wrap: wrap;
+			gap: 8px;
+			align-items: center;
+			margin-bottom: 8px;
+		}
+		.badge, .method, .type, .status {
+			border-radius: 999px;
+			padding: 2px 8px;
+			font-size: 12px;
+			font-weight: 600;
+		}
+		.added .badge {
+			background: var(--added-bg);
+			color: var(--added);
+		}
+		.removed .badge {
+			background: var(--removed-bg);
+			color: var(--removed);
+		}
+		.method, .type, .status {
+			background: color-mix(in srgb, var(--muted) 14%, transparent);
+			color: var(--fg);
+		}
+		.url {
+			display: block;
+			margin: 8px 0 12px;
+			color: inherit;
+			font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
+		}
+		dl {
+			display: grid;
+			grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
+			gap: 8px 16px;
+			margin: 0 0 12px;
+		}
+		dl div {
+			min-width: 0;
+		}
+		dt {
+			color: var(--muted);
+			font-size: 12px;
+		}
+		dd {
+			margin: 0;
+		}
+		details {
+			margin-top: 8px;
+		}
+		summary {
+			cursor: pointer;
+			color: var(--muted);
+		}
+		pre {
+			white-space: pre-wrap;
+			overflow-x: auto;
+			background: color-mix(in srgb, var(--muted) 10%, transparent);
+			border-radius: 6px;
+			padding: 10px;
+		}
+		.empty {
+			color: var(--muted);
+		}
+	</style>
+</head>
+<body>
+	<main>
+		<h1>Frontend Browser Network Request Diff</h1>
+		<p class="meta">Generated at ${escapeHtml(generatedAt)}. Requests are compared per paired round by method, resource type, and exact URL. Bodies are shown for added/removed request instances when CDP exposes them.</p>
+		${renderSummary(base, head, diffs)}
+		${content}
+	</main>
+</body>
+</html>
+`;
+}
+
+async function main() {
+	const [baseFile, headFile, outputFile] = process.argv.slice(2);
+
+	const base = JSON.parse(await readFile(baseFile, 'utf8')) as BrowserMetricsReport;
+	const head = JSON.parse(await readFile(headFile, 'utf8')) as BrowserMetricsReport;
+	await writeFile(outputFile, renderHtml(base, head));
+}
+
+// 直接実行されたときだけ呼ぶための判定(テストなどでこのファイル内の関数をimportするだけのとき用)
+if (process.argv[1] != null && import.meta.url === pathToFileURL(process.argv[1]).href) {
+	await main();
+}

.github/scripts/frontend-browser-diagnostics.render-md.mts

@@ -0,0 +1,297 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { readFile, writeFile } from 'node:fs/promises';
+import { pathToFileURL } from 'node:url';
+import * as util from './utility.mts';
+import * as heapSnapshotUtil from './heap-snapshot-util.mts';
+import type { HeapSnapshotData, HeapSnapshotReport } from './heap-snapshot-util.mts';
+import type { BrowserDiagnostics, NetworkRequest } from './chrome.mts';
+
+export type BrowserMeasurement = {
+	label: string;
+	timestamp: string;
+	url: string;
+	scenario: string;
+	diagnostics: BrowserDiagnostics;
+	durationMs: number;
+	network: {
+		requestCount: number;
+		webSocketConnectionCount: number;
+		webSocketSentBytes: number;
+		webSocketReceivedBytes: number;
+		finishedRequestCount: number;
+		failedRequestCount: number;
+		cachedRequestCount: number;
+		serviceWorkerRequestCount: number;
+		totalEncodedBytes: number;
+		totalDecodedBodyBytes: number;
+		sameOriginEncodedBytes: number;
+		thirdPartyEncodedBytes: number;
+		byResourceType: Record<string, {
+			requests: number;
+			encodedBytes: number;
+			decodedBodyBytes: number;
+		}>;
+		largestRequests: {
+			url: string;
+			method: string;
+			resourceType: string;
+			status?: number;
+			encodedBytes: number;
+			decodedBodyBytes: number;
+		}[];
+		failedRequests: {
+			url: string;
+			method: string;
+			resourceType: string;
+			errorText?: string;
+			status?: number;
+		}[];
+	};
+	performance: {
+		cdpMetrics: Record<string, number>;
+		runtimeHeap?: {
+			usedSize: number;
+			totalSize: number;
+		};
+		tabMemory: {
+			totalBytes: number;
+		};
+		webVitals: {
+			firstPaintMs?: number;
+			firstContentfulPaintMs?: number;
+			domContentLoadedEventEndMs?: number;
+			loadEventEndMs?: number;
+			longTaskCount: number;
+			longTaskDurationMs: number;
+			maxLongTaskDurationMs: number;
+			resourceEntryCount: number;
+			domElements: number;
+		};
+	};
+	heapSnapshot: HeapSnapshotData;
+};
+
+export type BrowserMeasurementSample = BrowserMeasurement & {
+	round: number;
+	networkRequests?: NetworkRequest[];
+};
+
+export type BrowserMetricsReport = {
+	label: string;
+	timestamp: string;
+	url: string;
+	scenario: string;
+	sampleCount: number;
+	aggregation: 'median';
+	summary: BrowserMeasurement;
+	samples: BrowserMeasurementSample[];
+};
+
+function formatValueWithSpread(report: BrowserMetricsReport, value: number, getSampleValue: (sample: BrowserMeasurementSample) => number | null | undefined, formatter: (value: number) => string) {
+	const values = report.samples.map(sample => getSampleValue(sample)).filter(v => Number.isFinite(v)) as number[];
+	const spread = values.length < 2 ? null : util.median(values.map(value => Math.abs(value - util.median(values))));
+	if (spread == null) return formatter(value);
+	return `${formatter(value)}<br>± ${formatter(spread)}`;
+}
+
+function renderMetricRow(
+	label: string,
+	base: BrowserMetricsReport,
+	head: BrowserMetricsReport,
+	getSummaryValue: (summary: BrowserMeasurement) => number,
+	getSampleValue: (sample: BrowserMeasurementSample) => number,
+	formatter: (value: number) => string,
+	significantThreshold = 0,
+	skipIfNotSignificant = true
+) {
+	const baseValue = getSummaryValue(base.summary);
+	const headValue = getSummaryValue(head.summary);
+	if (baseValue == null || headValue == null || !Number.isFinite(baseValue) || !Number.isFinite(headValue)) return null;
+
+	const summary = util.pairedDeltaSummary(base.samples, head.samples, sample => getSampleValue(sample));
+	// 有意な閾値に満たない場合はそもそもrowとして出力しない
+	if (skipIfNotSignificant && (Math.abs(summary.median) < significantThreshold)) return null;
+
+	const percent = baseValue === 0 ? null : summary.median * 100 / baseValue;
+	//const deltaMedian = `${util.formatColoredDelta(summary.median, formatter, colorThreshold)}<br>${percent == null ? '-' : util.formatDeltaPercent(percent, 0.1).replaceAll('\\%', '\\\\%')}`;
+	const deltaMedian = util.formatColoredDelta(summary.median, formatter, significantThreshold);
+
+	//return `| **${label}** | ${formatValueWithSpread(base, baseValue, getSampleValue, formatter)} | ${formatValueWithSpread(head, headValue, getSampleValue, formatter)} | ${deltaMedian} | ${summary == null ? '-' : formatter(summary.mad)} | ${summary == null ? '-' : util.formatColoredDelta(summary.min, formatter)} | ${summary == null ? '-' : util.formatColoredDelta(summary.max, formatter)} |`;
+	return `| **${label}** | ${formatter(baseValue)} | ${formatter(headValue)} | ${deltaMedian} | ${summary == null ? '-' : formatter(summary.mad)} | ${summary == null ? '-' : util.formatColoredDelta(summary.min, formatter, significantThreshold)} | ${summary == null ? '-' : util.formatColoredDelta(summary.max, formatter, significantThreshold)} |`;
+}
+
+function resourceTypeBytes(report: BrowserMeasurement, resourceTypes: string[]) {
+	return resourceTypes.reduce((sum, resourceType) => sum + (report.network.byResourceType[resourceType]?.encodedBytes ?? 0), 0);
+}
+
+function resourceTypeSampleBytes(sample: BrowserMeasurementSample, resourceTypes: string[]) {
+	return resourceTypeBytes(sample, resourceTypes);
+}
+
+function renderSummaryTable(base: BrowserMetricsReport, head: BrowserMetricsReport, all = false) {
+	//function getMetric(report: BrowserMeasurement, key: string) {
+	//	return report.performance.cdpMetrics[key];
+	//}
+
+	const rows = [
+		//metricRow('Scenario duration', base, head, summary => summary.durationMs, sample => sample.durationMs, util.formatMs),
+		renderMetricRow('Requests', base, head, summary => summary.network.requestCount, sample => sample.network.requestCount, util.formatNumber, 1, !all),
+		//metricRow('Failed requests', base, head, summary => summary.network.failedRequestCount, sample => sample.network.failedRequestCount, util.formatNumber),
+		renderMetricRow('Encoded network', base, head, summary => summary.network.totalEncodedBytes, sample => sample.network.totalEncodedBytes, util.formatBytes, 10000, !all),
+		renderMetricRow('Decoded body', base, head, summary => summary.network.totalDecodedBodyBytes, sample => sample.network.totalDecodedBodyBytes, util.formatBytes, 10000, !all),
+		renderMetricRow('Same-origin encoded', base, head, summary => summary.network.sameOriginEncodedBytes, sample => sample.network.sameOriginEncodedBytes, util.formatBytes, 10000, !all),
+		renderMetricRow('Third-party encoded', base, head, summary => summary.network.thirdPartyEncodedBytes, sample => sample.network.thirdPartyEncodedBytes, util.formatBytes, 10000, !all),
+		renderMetricRow('Script encoded', base, head, summary => resourceTypeBytes(summary, ['Script']), sample => resourceTypeSampleBytes(sample, ['Script']), util.formatBytes, 10000, !all),
+		renderMetricRow('Stylesheet encoded', base, head, summary => resourceTypeBytes(summary, ['Stylesheet']), sample => resourceTypeSampleBytes(sample, ['Stylesheet']), util.formatBytes, 10000, !all),
+		renderMetricRow('Fetch/XHR encoded', base, head, summary => resourceTypeBytes(summary, ['Fetch', 'XHR']), sample => resourceTypeSampleBytes(sample, ['Fetch', 'XHR']), util.formatBytes, 10000, !all),
+		renderMetricRow('Image encoded', base, head, summary => resourceTypeBytes(summary, ['Image']), sample => resourceTypeSampleBytes(sample, ['Image']), util.formatBytes, 10000, !all),
+		renderMetricRow('Font encoded', base, head, summary => resourceTypeBytes(summary, ['Font']), sample => resourceTypeSampleBytes(sample, ['Font']), util.formatBytes, 10000, !all),
+		//metricRow('First contentful paint', base, head, summary => summary.performance.webVitals.firstContentfulPaintMs, sample => sample.performance.webVitals.firstContentfulPaintMs, util.formatMs),
+		//metricRow('Load event end', base, head, summary => summary.performance.webVitals.loadEventEndMs, sample => sample.performance.webVitals.loadEventEndMs, util.formatMs),
+		//metricRow('Long tasks', base, head, summary => summary.performance.webVitals.longTaskCount, sample => sample.performance.webVitals.longTaskCount, util.formatNumber),
+		//metricRow('Long task duration', base, head, summary => summary.performance.webVitals.longTaskDurationMs, sample => sample.performance.webVitals.longTaskDurationMs, util.formatMs),
+		//metricRow('Max long task', base, head, summary => summary.performance.webVitals.maxLongTaskDurationMs, sample => sample.performance.webVitals.maxLongTaskDurationMs, util.formatMs),
+		//metricRow('JS heap used', base, head, summary => summary.performance.runtimeHeap?.usedSize ?? getMetric(summary, 'JSHeapUsedSize'), sample => sample.performance.runtimeHeap?.usedSize ?? getMetric(sample, 'JSHeapUsedSize'), util.formatBytes),
+		//metricRow('JS heap total', base, head, summary => summary.performance.runtimeHeap?.totalSize ?? getMetric(summary, 'JSHeapTotalSize'), sample => sample.performance.runtimeHeap?.totalSize ?? getMetric(sample, 'JSHeapTotalSize'), util.formatBytes),
+		//metricRow('V8 heap snapshot total', base, head, summary => summary.heapSnapshot.categories.total, sample => sample.heapSnapshot.categories.total, util.formatBytes, 10000),
+		//metricRow('DOM elements', base, head, summary => summary.performance.webVitals.domElements, sample => sample.performance.webVitals.domElements, util.formatNumber),
+		//metricRow('CDP nodes', base, head, summary => getMetric(summary, 'Nodes'), sample => getMetric(sample, 'Nodes'), util.formatNumber),
+		//metricRow('JS event listeners', base, head, summary => getMetric(summary, 'JSEventListeners'), sample => getMetric(sample, 'JSEventListeners'), util.formatNumber),
+		//metricRow('Layout count', base, head, summary => getMetric(summary, 'LayoutCount'), sample => getMetric(sample, 'LayoutCount'), util.formatNumber),
+		//metricRow('Recalc style count', base, head, summary => getMetric(summary, 'RecalcStyleCount'), sample => getMetric(sample, 'RecalcStyleCount'), util.formatNumber),
+		//metricRow('Script duration', base, head, summary => getMetric(summary, 'ScriptDuration'), sample => getMetric(sample, 'ScriptDuration'), util.formatSecondsAsMs),
+		//metricRow('Task duration', base, head, summary => getMetric(summary, 'TaskDuration'), sample => getMetric(sample, 'TaskDuration'), util.formatSecondsAsMs),
+		renderMetricRow('WebSocket connections', base, head, summary => summary.network.webSocketConnectionCount, sample => sample.network.webSocketConnectionCount, util.formatNumber, 1, !all),
+		renderMetricRow('WebSocket sent', base, head, summary => summary.network.webSocketSentBytes, sample => sample.network.webSocketSentBytes, util.formatBytes, 10000, !all),
+		renderMetricRow('WebSocket received', base, head, summary => summary.network.webSocketReceivedBytes, sample => sample.network.webSocketReceivedBytes, util.formatBytes, 10000, !all),
+		renderMetricRow('Page errors', base, head, summary => summary.diagnostics.pageErrorCount, sample => sample.diagnostics.pageErrorCount, util.formatNumber, 1, !all),
+		renderMetricRow('Console log', base, head, summary => summary.diagnostics.console.log, sample => sample.diagnostics.console.log, util.formatNumber, 1, !all),
+		renderMetricRow('Console warnings', base, head, summary => summary.diagnostics.console.warning, sample => sample.diagnostics.console.warning, util.formatNumber, 1, !all),
+		renderMetricRow('Console errors', base, head, summary => summary.diagnostics.console.error, sample => sample.diagnostics.console.error, util.formatNumber, 1, !all),
+		renderMetricRow('Console info', base, head, summary => summary.diagnostics.console.info, sample => sample.diagnostics.console.info, util.formatNumber, 1, !all),
+		renderMetricRow('Page-attributed memory', base, head, summary => summary.performance.tabMemory.totalBytes, sample => sample.performance.tabMemory.totalBytes, util.formatBytes, 10000, !all),
+	].filter(row => row != null);
+
+	return [
+		'| Metric | Base | Head | Δ median | Δ MAD | Δ min | Δ max |',
+		'| --- | ---: | ---: | ---: | ---: | ---: | ---: |',
+		...rows,
+	].join('\n');
+}
+
+function renderResourceTypeTable(base: BrowserMetricsReport, head: BrowserMetricsReport) {
+	const preferredOrder = ['Document', 'Script', 'Stylesheet', 'Fetch', 'XHR', 'Image', 'Font', 'Media', 'WebSocket', 'EventSource', 'Other'];
+	const keys = [...new Set([
+		...preferredOrder,
+		...Object.keys(base.summary.network.byResourceType),
+		...Object.keys(head.summary.network.byResourceType),
+	])].filter(key => base.summary.network.byResourceType[key] != null || head.summary.network.byResourceType[key] != null);
+
+	const lines = [
+		'<table>',
+		'<thead>',
+		'<tr>',
+		'<th rowspan="2">Type</th>',
+		'<th colspan="3">Requests</th>',
+		'<th colspan="3">Encoded bytes</th>',
+		'</tr>',
+		'<tr>',
+		'<th>Base</th>',
+		'<th>Head</th>',
+		'<th>Δ</th>',
+		'<th>Base</th>',
+		'<th>Head</th>',
+		'<th>Δ</th>',
+		'</tr>',
+		'</thead>',
+		'<tbody>',
+	];
+
+	for (const key of keys) {
+		const baseRow = base.summary.network.byResourceType[key] ?? { requests: 0, encodedBytes: 0 };
+		const headRow = head.summary.network.byResourceType[key] ?? { requests: 0, encodedBytes: 0 };
+		lines.push('<tr>');
+		lines.push(`<td><b>${key}</b></td>`);
+		lines.push(`<td align="right">${util.formatNumber(baseRow.requests)}</td>`);
+		lines.push(`<td align="right">${util.formatNumber(headRow.requests)}</td>`);
+		lines.push(`<td align="right">${util.formatColoredDelta(headRow.requests - baseRow.requests, util.formatNumber)}</td>`);
+		lines.push(`<td align="right">${util.formatBytes(baseRow.encodedBytes)}</td>`);
+		lines.push(`<td align="right">${util.formatBytes(headRow.encodedBytes)}</td>`);
+		lines.push(`<td align="right">${util.formatColoredDelta(headRow.encodedBytes - baseRow.encodedBytes, util.formatBytes)}</td>`);
+		lines.push('</tr>');
+	}
+
+	lines.push('</tbody>');
+	lines.push('</table>');
+
+	return lines.join('\n');
+}
+
+function toHeapSnapshotReport(report: BrowserMetricsReport): HeapSnapshotReport {
+	return {
+		summary: report.summary.heapSnapshot,
+		samples: report.samples.map(sample => ({
+			round: sample.round,
+			data: sample.heapSnapshot,
+		})),
+	};
+}
+
+function renderMd(base: BrowserMetricsReport, head: BrowserMetricsReport, options: {
+	baseHeapSnapshotUrl: string;
+	headHeapSnapshotUrl: string;
+	detailedHtmlUrl?: string;
+}) {
+	const detailedHtmlUrl = options.detailedHtmlUrl;
+	const heapSnapshotTable = heapSnapshotUtil.renderHeapSnapshotTable(toHeapSnapshotReport(base), toHeapSnapshotReport(head));
+	const lines = [
+		'## 🖥 Frontend Browser Diagnostics Report',
+		'',
+		renderSummaryTable(base, head),
+		'',
+		'<i>Only metrics showing significant changes are displayed.</i>',
+		'',
+		detailedHtmlUrl == null || detailedHtmlUrl === '' ? null : `[View details](${detailedHtmlUrl})`,
+		detailedHtmlUrl == null || detailedHtmlUrl === '' ? null : '',
+		'<details>',
+		'<summary>Requests by resource type</summary>',
+		'',
+		renderResourceTypeTable(base, head),
+		'',
+		'</details>',
+		'',
+		'<details>',
+		'<summary>V8 heap snapshot statistics</summary>',
+		'',
+		heapSnapshotTable ?? '_No V8 heap snapshot data._',
+		'',
+		//heapSnapshotUtil.renderHeapSnapshotSankey(toHeapSnapshotReport(head), 'Head'),
+		//'',
+		`Download representative heap snapshot: [base](${options.baseHeapSnapshotUrl}) / [head](${options.headHeapSnapshotUrl})`,
+		'</details>',
+		'',
+	];
+
+	return lines.filter(line => line != null).join('\n').trimEnd() + '\n';
+}
+
+async function main() {
+	const [baseFile, headFile, outputFile] = process.argv.slice(2);
+
+	const base = JSON.parse(await readFile(baseFile, 'utf8')) as BrowserMetricsReport;
+	const head = JSON.parse(await readFile(headFile, 'utf8')) as BrowserMetricsReport;
+	await writeFile(outputFile, renderMd(base, head, {
+		baseHeapSnapshotUrl: process.env.FRONTEND_BROWSER_BASE_HEAP_SNAPSHOT_ARTIFACT_URL!,
+		headHeapSnapshotUrl: process.env.FRONTEND_BROWSER_HEAD_HEAP_SNAPSHOT_ARTIFACT_URL!,
+		detailedHtmlUrl: process.env.FRONTEND_BROWSER_DETAILED_HTML_ARTIFACT_URL,
+	}));
+}
+
+// 直接実行されたときだけ呼ぶための判定(テストなどでこのファイル内の関数をimportするだけのとき用)
+if (process.argv[1] != null && import.meta.url === pathToFileURL(process.argv[1]).href) {
+	await main();
+}

.github/scripts/frontend-bundle-diagnostics.render-md.mts

@@ -0,0 +1,527 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { promises as fs } from 'node:fs';
+import path from 'node:path';
+import * as util from './utility.mts';
+
+const locale = 'ja-JP';
+
+type Manifest = Record<string, { file?: string; src?: string; name?: string; isEntry?: boolean; imports?: string[] }>;
+
+const stableNamedChunks = new Set(['vue', 'i18n']);
+
+type FileEntry = {
+	comparisonKey: string | null;
+	displayName: string;
+	file: string;
+	manifestKeys: string[];
+	size: number;
+};
+
+type CollectedReport = {
+	manifest: Manifest;
+	chunks: FileEntry[];
+	comparableChunks: Record<string, FileEntry>;
+	chunksByManifestKey: Record<string, FileEntry>;
+	startupFiles: string[];
+};
+
+function entryDisplayName(entry: FileEntry) {
+	if (!entry) return '';
+	return entry.displayName || entry.file;
+}
+
+function findEntryKey(manifest: Manifest) {
+	const entries = Object.entries(manifest);
+	return entries.find(([key, chunk]) => key === 'src/_boot_.ts' || chunk.src === 'src/_boot_.ts')?.[0]
+		?? entries.find(([, chunk]) => chunk.name === 'entry' && chunk.isEntry)?.[0]
+		?? entries.find(([, chunk]) => chunk.isEntry)?.[0]
+		?? null;
+}
+
+function stableChunkKey(chunk: Manifest[string]) {
+	if (chunk.src != null) return `src:${util.normalizePath(chunk.src)}`;
+	if (chunk.name != null && stableNamedChunks.has(chunk.name)) return `named:${chunk.name}`;
+	return null;
+}
+
+function collectStartupManifestKeys(manifest: Manifest) {
+	const entryKey = findEntryKey(manifest);
+	const keys = new Set<string>();
+	if (entryKey == null) throw new Error('Unable to find frontend startup entry in Vite manifest.');
+
+	function visit(key: string, importedBy?: string) {
+		if (keys.has(key)) return;
+		const chunk = manifest[key];
+		const importContext = importedBy == null ? '' : ` imported by "${importedBy}"`;
+		if (chunk == null) throw new Error(`Startup manifest key "${key}"${importContext} is missing.`);
+		if (chunk.file == null || chunk.file.length === 0) throw new Error(`Startup manifest key "${key}"${importContext} has no output file.`);
+		if (!chunk.file.endsWith('.js')) throw new Error(`Startup manifest key "${key}"${importContext} resolves to non-JavaScript output "${chunk.file}".`);
+		keys.add(key);
+		for (const importKey of chunk.imports ?? []) visit(importKey, key);
+	}
+
+	visit(entryKey);
+	return keys;
+}
+
+async function resolveBuiltFile(outDir: string, file: string) {
+	if (file.startsWith('scripts/')) {
+		const localizedFile = file.slice('scripts/'.length);
+		const localizedPath = path.join(outDir, locale, localizedFile);
+		if (await util.fileExists(localizedPath)) {
+			return {
+				absolutePath: localizedPath,
+				relativePath: `${locale}/${localizedFile}`,
+			};
+		}
+
+		throw new Error(`Expected ${locale} localized chunk for ${file}, but ${localizedPath} was not found.`);
+	}
+	return {
+		absolutePath: path.join(outDir, file),
+		relativePath: file,
+	};
+}
+
+async function collectReport(repoDir: string): Promise<CollectedReport> {
+	const outDir = path.join(repoDir, 'built/_frontend_vite_');
+	const manifestPath = path.join(outDir, 'manifest.json');
+	const manifest = JSON.parse(await fs.readFile(manifestPath, 'utf8')) as Manifest;
+	const chunksByFile = new Map<string, FileEntry>();
+	const comparableChunks = new Map<string, FileEntry>();
+	const chunksByManifestKey = new Map<string, FileEntry>();
+
+	for (const [manifestKey, chunk] of Object.entries(manifest)) {
+		if (!chunk.file?.endsWith('.js')) continue;
+		const builtFile = await resolveBuiltFile(outDir, chunk.file);
+		const comparisonKey = stableChunkKey(chunk);
+		let entry = chunksByFile.get(builtFile.relativePath);
+		if (entry == null) {
+			entry = {
+				comparisonKey,
+				displayName: chunk.src ?? chunk.name ?? manifestKey,
+				file: builtFile.relativePath,
+				manifestKeys: [manifestKey],
+				size: await util.fileSize(builtFile.absolutePath),
+			};
+			chunksByFile.set(entry.file, entry);
+		} else if (entry.comparisonKey !== comparisonKey) {
+			throw new Error(`Conflicting identities for ${entry.file}`);
+		} else {
+			entry.manifestKeys.push(manifestKey);
+		}
+		chunksByManifestKey.set(manifestKey, entry);
+		if (comparisonKey != null) {
+			const existing = comparableChunks.get(comparisonKey);
+			if (existing != null && existing.file !== entry.file) {
+				throw new Error(`Duplicate stable chunk key "${comparisonKey}": ${existing.file}, ${entry.file}`);
+			}
+			comparableChunks.set(comparisonKey, entry);
+		}
+	}
+
+	const localeDir = path.join(outDir, locale);
+	if (await util.fileExists(localeDir)) {
+		for await (const fullPath of util.traverseDirectory(localeDir)) {
+			if (!fullPath.endsWith('.js')) continue;
+			const relativePath = util.normalizePath(path.relative(outDir, fullPath));
+			if (chunksByFile.has(relativePath)) continue;
+			chunksByFile.set(relativePath, {
+				comparisonKey: null,
+				displayName: relativePath,
+				file: relativePath,
+				manifestKeys: [],
+				size: await util.fileSize(fullPath),
+			});
+		}
+	}
+
+	const startupFiles = new Set<string>();
+	for (const manifestKey of collectStartupManifestKeys(manifest)) {
+		const entry = chunksByManifestKey.get(manifestKey);
+		if (entry != null) startupFiles.add(entry.file);
+	}
+
+	return {
+		manifest,
+		chunks: [...chunksByFile.values()],
+		comparableChunks: Object.fromEntries(comparableChunks),
+		chunksByManifestKey: Object.fromEntries(chunksByManifestKey),
+		startupFiles: [...startupFiles],
+	};
+}
+
+type VisualizerReport = {
+	nodeParts?: Record<string, {
+		renderedLength: number;
+		gzipLength: number;
+		brotliLength: number;
+	}>;
+	nodeMetas?: Record<string, {
+		id: string;
+		isEntry?: boolean;
+		isExternal?: boolean;
+		importedBy?: string[];
+		imported?: { id: string; dynamic?: boolean }[];
+		moduleParts?: Record<string, string>;
+		renderedLength: number;
+		gzipLength: number;
+		brotliLength: number;
+	}>;
+	options?: Record<string, unknown>;
+};
+
+
+function collectVisualizerReport(data: VisualizerReport) {
+	const nodeParts = data.nodeParts ?? {};
+	const nodeMetas = Object.values(data.nodeMetas ?? {});
+	const moduleRows = [];
+	const bundleMap = new Map();
+
+	for (const meta of nodeMetas) {
+		const row = {
+			id: meta.id,
+			bundles: 0,
+			renderedLength: 0,
+			gzipLength: 0,
+			brotliLength: 0,
+			importedByCount: meta.importedBy?.length ?? 0,
+			importedCount: meta.imported?.length ?? 0,
+		};
+
+		for (const [bundleId, partUid] of Object.entries(meta.moduleParts ?? {})) {
+			const part = nodeParts[partUid];
+			if (part == null) continue;
+
+			row.bundles += 1;
+			row.renderedLength += part.renderedLength;
+			row.gzipLength += part.gzipLength;
+			row.brotliLength += part.brotliLength;
+
+			const bundle = bundleMap.get(bundleId) ?? {
+				id: bundleId,
+				modules: 0,
+				renderedLength: 0,
+				gzipLength: 0,
+				brotliLength: 0,
+			};
+			bundle.modules += 1;
+			bundle.renderedLength += part.renderedLength;
+			bundle.gzipLength += part.gzipLength;
+			bundle.brotliLength += part.brotliLength;
+			bundleMap.set(bundleId, bundle);
+		}
+
+		if (row.bundles > 0) {
+			moduleRows.push(row);
+		}
+	}
+
+	let staticImports = 0;
+	let dynamicImports = 0;
+	for (const meta of nodeMetas) {
+		for (const imported of meta.imported ?? []) {
+			if (imported.dynamic) {
+				dynamicImports += 1;
+			} else {
+				staticImports += 1;
+			}
+		}
+	}
+
+	const bundleRows = [...bundleMap.values()].sort((a, b) => b.renderedLength - a.renderedLength);
+	const hotModules = [...moduleRows].sort((a, b) => b.renderedLength - a.renderedLength);
+	const totalRendered = moduleRows.reduce((sum, row) => sum + row.renderedLength, 0);
+	const totalGzip = moduleRows.reduce((sum, row) => sum + row.gzipLength, 0);
+	const totalBrotli = moduleRows.reduce((sum, row) => sum + row.brotliLength, 0);
+
+	return {
+		options: data.options ?? {},
+		summary: {
+			bundles: bundleRows.length,
+			modules: moduleRows.length,
+			entries: nodeMetas.filter((meta) => meta.isEntry).length,
+			externals: nodeMetas.filter((meta) => meta.isExternal).length,
+			staticImports,
+			dynamicImports,
+		},
+		metrics: {
+			renderedLength: totalRendered,
+			gzipLength: totalGzip,
+			brotliLength: totalBrotli,
+		},
+		hotModules,
+	};
+}
+
+function renderVisualizerSummaryTable(before: ReturnType<typeof collectVisualizerReport>, after: ReturnType<typeof collectVisualizerReport>) {
+	const summary = [
+		'bundles',
+		'modules',
+		'entries',
+		//'externals',
+		'staticImports',
+		'dynamicImports',
+	] as const;
+
+	const metrics = [
+		'renderedLength',
+		'gzipLength',
+		'brotliLength',
+	] as const;
+
+	return [
+		`<table>`,
+		`<thead>`,
+		`<tr>`,
+		`<th rowspan="2"></th>`,
+		`<th rowspan="2">Bundles</th>`,
+		`<th rowspan="2">Modules</th>`,
+		`<th rowspan="2">Entries</th>`,
+		`<th colspan="2">Imports</th>`,
+		`<th colspan="3">Size</th>`,
+		`</tr>`,
+		`<tr>`,
+		`<th>Static</th>`,
+		`<th>Dynamic</th>`,
+		`<th>Rendered</th>`,
+		`<th>Gzip</th>`,
+		`<th>Brotli</th>`,
+		`</tr>`,
+		`</thead>`,
+		`<tbody>`,
+		`<tr>`,
+		`<th><b>Before</b></th>`,
+		...summary.map((key) => `<td>${util.formatNumber(before.summary[key])}</td>`),
+		...metrics.map((key) => `<td>${util.formatBytes(before.metrics[key])}</td>`),
+		`</tr>`,
+		`<tr>`,
+		`<th><b>After</b></th>`,
+		...summary.map((key) => `<td>${util.formatNumber(after.summary[key])}</td>`),
+		...metrics.map((key) => `<td>${util.formatBytes(after.metrics[key])}</td>`),
+		`</tr>`,
+		`<tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>`,
+		`<tr>`,
+		`<th><b>Δ</b></th>`,
+		...summary.map((key) => `<td>${util.calcAndFormatDeltaNumber(before.summary[key], after.summary[key], 0)}</td>`),
+		...metrics.map((key) => `<td>${util.calcAndFormatDeltaBytes(before.metrics[key], after.metrics[key], 1000)}</td>`),
+		`</tr>`,
+		`<tr>`,
+		`<th><b>Δ (%)</b></th>`,
+		...summary.map((key) => `<td>${util.calcAndFormatDeltaPercent(before.summary[key], after.summary[key], 0.1)}</td>`),
+		...metrics.map((key) => `<td>${util.calcAndFormatDeltaPercent(before.metrics[key], after.metrics[key], 0.1)}</td>`),
+		`</tr>`,
+		`</tbody>`,
+		`</table>`,
+	].join('\n');
+}
+
+function getChunkComparisonRows(keys: string[], before: Record<string, FileEntry>, after: Record<string, FileEntry>) {
+	return keys.map(key => {
+		const beforeEntry = before[key];
+		const afterEntry = after[key];
+		const beforeSize = beforeEntry?.size ?? 0;
+		const afterSize = afterEntry?.size ?? 0;
+		return {
+			key,
+			name: entryDisplayName(beforeEntry ?? afterEntry),
+			beforeFile: beforeEntry?.file,
+			afterFile: afterEntry?.file,
+			beforeSize,
+			afterSize,
+			changeType: beforeEntry == null ? 'added' : afterEntry == null ? 'removed' : beforeSize !== afterSize ? 'updated' : 'unchanged',
+			sortSize: Math.max(beforeSize, afterSize),
+		};
+	});
+}
+
+type ChunkComparisonRow = ReturnType<typeof getChunkComparisonRows>[number];
+
+type ChunkAggregate = {
+	beforeSize: number;
+	afterSize: number;
+	beforeCount: number;
+	afterCount: number;
+};
+
+const smallDeltaThreshold = 5;
+
+function sumChunkSizes(chunks: FileEntry[]) {
+	return chunks.reduce((sum, chunk) => sum + chunk.size, 0);
+}
+
+function generatedAggregate(before: FileEntry[], after: FileEntry[]): ChunkAggregate {
+	const beforeGenerated = before.filter(chunk => chunk.comparisonKey == null);
+	const afterGenerated = after.filter(chunk => chunk.comparisonKey == null);
+	return {
+		beforeSize: sumChunkSizes(beforeGenerated),
+		afterSize: sumChunkSizes(afterGenerated),
+		beforeCount: beforeGenerated.length,
+		afterCount: afterGenerated.length,
+	};
+}
+
+function hasSmallDelta(row: ChunkComparisonRow) {
+	return Math.abs(row.afterSize - row.beforeSize) <= smallDeltaThreshold;
+}
+
+function comparisonRowsAggregate(rows: ChunkComparisonRow[]): ChunkAggregate {
+	return {
+		beforeSize: rows.reduce((sum, row) => sum + row.beforeSize, 0),
+		afterSize: rows.reduce((sum, row) => sum + row.afterSize, 0),
+		beforeCount: rows.filter(row => row.beforeFile != null).length,
+		afterCount: rows.filter(row => row.afterFile != null).length,
+	};
+}
+
+function comparableMap(chunks: FileEntry[]) {
+	const entries: [string, FileEntry][] = [];
+	for (const chunk of chunks) {
+		if (chunk.comparisonKey != null) entries.push([chunk.comparisonKey, chunk]);
+	}
+	return Object.fromEntries(entries);
+}
+
+function summarizeChunkChanges(rows: ReturnType<typeof getChunkComparisonRows>) {
+	return {
+		updated: rows.filter((row) => row.changeType === 'updated').length,
+		added: rows.filter((row) => row.changeType === 'added').length,
+		removed: rows.filter((row) => row.changeType === 'removed').length,
+	};
+}
+
+function formatChunkChangeSummary(label: string, summary: ReturnType<typeof summarizeChunkChanges>) {
+	return `${label} (${summary.updated} updated, ${summary.added} added, ${summary.removed} removed)`;
+}
+
+function compareChunkComparisonRows(a: ChunkComparisonRow, b: ChunkComparisonRow) {
+	return Math.abs(b.afterSize - b.beforeSize) - Math.abs(a.afterSize - a.beforeSize)
+		|| (b.afterSize - b.beforeSize) - (a.afterSize - a.beforeSize)
+		|| b.sortSize - a.sortSize
+		|| a.name.localeCompare(b.name);
+}
+
+function chunkFileDisplay(row: ChunkComparisonRow) {
+	if (row.beforeFile == null) return row.afterFile ?? '';
+	if (row.afterFile == null || row.beforeFile === row.afterFile) return row.beforeFile;
+	return `${row.beforeFile} → ${row.afterFile}`;
+}
+
+function chunkMarkdownTable(
+	rows: ReturnType<typeof getChunkComparisonRows>,
+	total?: { beforeSize: number; afterSize: number },
+	generated?: ChunkAggregate,
+	other?: ChunkAggregate,
+) {
+	const hasGenerated = generated != null && (generated.beforeCount > 0 || generated.afterCount > 0);
+	const hasOther = other != null && (other.beforeCount > 0 || other.afterCount > 0);
+	if (rows.length === 0 && total == null && !hasGenerated && !hasOther) return '_No data_';
+
+	const lines = [
+		'| Chunk | Before | After | Δ | Δ (%) |',
+		'| --- | ---: | ---: | ---: | ---: |',
+	];
+	if (total != null) {
+		lines.push(`| (total) | ${util.formatBytes(total.beforeSize)} | ${util.formatBytes(total.afterSize)} | ${util.calcAndFormatDeltaBytes(total.beforeSize, total.afterSize, 1000)} | ${util.calcAndFormatDeltaPercent(total.beforeSize, total.afterSize, 0.1).replaceAll('\\%', '\\\\%')} |`);
+		lines.push('| | | | | |');
+	}
+
+	for (const row of rows) {
+		const chunkFile = chunkFileDisplay(row);
+		if (row.changeType === 'added') {
+			lines.push(`| <details><summary>\`${util.escapeMdTableCell(row.name)}\`</summary> \`${util.escapeMdTableCell(chunkFile)}\` </details> | ${util.formatBytes(row.beforeSize)} | ${util.formatBytes(row.afterSize)} | ${util.calcAndFormatDeltaBytes(row.beforeSize, row.afterSize, 1000)} | $\\color{orange}{\\text{( + )}}$ |`);
+		} else if (row.changeType === 'removed') {
+			lines.push(`| <details><summary>\`${util.escapeMdTableCell(row.name)}\`</summary> \`${util.escapeMdTableCell(chunkFile)}\` </details> | ${util.formatBytes(row.beforeSize)} | ${util.formatBytes(row.afterSize)} | ${util.calcAndFormatDeltaBytes(row.beforeSize, row.afterSize, 1000)} | $\\color{green}{\\text{( - )}}$ |`);
+		} else {
+			lines.push(`| <details><summary>\`${util.escapeMdTableCell(row.name)}\`</summary> \`${util.escapeMdTableCell(chunkFile)}\` </details> | ${util.formatBytes(row.beforeSize)} | ${util.formatBytes(row.afterSize)} | ${util.calcAndFormatDeltaBytes(row.beforeSize, row.afterSize, 1000)} | ${util.calcAndFormatDeltaPercent(row.beforeSize, row.afterSize, 0.1).replaceAll('\\%', '\\\\%')} |`);
+		}
+	}
+	if (hasGenerated) {
+		lines.push(`| (other generated chunks) | ${util.formatBytes(generated.beforeSize)} | ${util.formatBytes(generated.afterSize)} | ${util.calcAndFormatDeltaBytes(generated.beforeSize, generated.afterSize, 1000)} | ${util.calcAndFormatDeltaPercent(generated.beforeSize, generated.afterSize, 0.1).replaceAll('\\%', '\\\\%')} |`);
+	}
+	if (hasOther) {
+		lines.push(`| (other) | ${util.formatBytes(other.beforeSize)} | ${util.formatBytes(other.afterSize)} | ${util.calcAndFormatDeltaBytes(other.beforeSize, other.afterSize, 1000)} | ${util.calcAndFormatDeltaPercent(other.beforeSize, other.afterSize, 0.1).replaceAll('\\%', '\\\\%')} |`);
+	}
+	return lines.join('\n');
+}
+
+function renderFrontendChunkReport(before: Awaited<ReturnType<typeof collectReport>>, after: Awaited<ReturnType<typeof collectReport>>) {
+	const beforeComparable = before.comparableChunks;
+	const afterComparable = after.comparableChunks;
+	const allChunkKeys = [...new Set([...Object.keys(beforeComparable), ...Object.keys(afterComparable)])];
+	const allComparisonRows = getChunkComparisonRows(allChunkKeys, beforeComparable, afterComparable);
+
+	const changedRows = allComparisonRows.filter((row) => row.changeType !== 'unchanged');
+	const diffSummary = summarizeChunkChanges(changedRows);
+	const diffTotal = {
+		beforeSize: sumChunkSizes(before.chunks),
+		afterSize: sumChunkSizes(after.chunks),
+	};
+	const diffGenerated = generatedAggregate(before.chunks, after.chunks);
+	const diffOther = comparisonRowsAggregate(changedRows.filter(hasSmallDelta));
+	const diffRows = changedRows.filter(row => !hasSmallDelta(row)).sort(compareChunkComparisonRows).slice(0, 30); // TODO: 実際に30を超えて切り捨てられたrowがあった場合はその旨をmarkdown内に表示するようにする
+
+	const beforeStartupFiles = new Set(before.startupFiles);
+	const afterStartupFiles = new Set(after.startupFiles);
+	const beforeStartupChunks = before.chunks.filter(chunk => beforeStartupFiles.has(chunk.file));
+	const afterStartupChunks = after.chunks.filter(chunk => afterStartupFiles.has(chunk.file));
+	const beforeStartupComparable = comparableMap(beforeStartupChunks);
+	const afterStartupComparable = comparableMap(afterStartupChunks);
+	const startupKeys = [...new Set([...Object.keys(beforeStartupComparable), ...Object.keys(afterStartupComparable)])];
+	const startupComparisonRows = getChunkComparisonRows(startupKeys, beforeStartupComparable, afterStartupComparable);
+	const startupSummary = summarizeChunkChanges(startupComparisonRows);
+	const startupOther = comparisonRowsAggregate(startupComparisonRows.filter(hasSmallDelta));
+	const startupRows = startupComparisonRows.filter(row => !hasSmallDelta(row)).sort(compareChunkComparisonRows);
+	const startupTotal = {
+		beforeSize: sumChunkSizes(beforeStartupChunks),
+		afterSize: sumChunkSizes(afterStartupChunks),
+	};
+	const startupGenerated = generatedAggregate(beforeStartupChunks, afterStartupChunks);
+
+	return [
+		'<details>',
+		`<summary>${formatChunkChangeSummary('Chunk size diff', diffSummary)}</summary>`,
+		'',
+		chunkMarkdownTable(diffRows, diffTotal, diffGenerated, diffOther),
+		'',
+		'</details>',
+		'',
+		'<details>',
+		`<summary>${formatChunkChangeSummary('Startup chunk size', startupSummary)}</summary>`,
+		'',
+		chunkMarkdownTable(startupRows, startupTotal, startupGenerated, startupOther),
+		'',
+		`_Startup chunks are the Vite entry for \`src/_boot_.ts\` and its static imports._`,
+		'',
+		'</details>',
+		'',
+	].join('\n');
+}
+
+const args = process.argv.slice(2);
+const [beforeDir, afterDir, beforeStatsFile, afterStatsFile, outFile] = args;
+const before = await collectReport(beforeDir);
+const after = await collectReport(afterDir);
+const beforeStats = JSON.parse(await fs.readFile(beforeStatsFile, 'utf8')) as VisualizerReport;
+const afterStats = JSON.parse(await fs.readFile(afterStatsFile, 'utf8')) as VisualizerReport;
+const beforeVisualizerReport = collectVisualizerReport(beforeStats);
+const afterVisualizerReport = collectVisualizerReport(afterStats);
+const visualizerArtifactLink = `[Open treemap HTML](${process.env.FRONTEND_BUNDLE_REPORT_ARTIFACT_URL})`;
+
+const body = [
+	`## 📦 Frontend Bundle Report`,
+	'',
+	renderFrontendChunkReport(before, after),
+	'',
+	'## Bundle Stats',
+	'',
+	renderVisualizerSummaryTable(beforeVisualizerReport, afterVisualizerReport),
+	'',
+	visualizerArtifactLink,
+].join('\n');
+
+await fs.writeFile(outFile, body);

.github/scripts/heap-snapshot-util.mts

@@ -0,0 +1,520 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+// NOTE: このファイルはworkflow上でバックエンドからも参照されるため、side effectがあってはならない
+
+import * as util from './utility.mts';
+
+export const heapSnapshotCategory = {
+	total: { label: 'Total', color: 'gray', colorHex: '#888888' },
+	code: { label: 'Code', color: 'orange', colorHex: '#f28e2c' },
+	strings: { label: 'Strings', color: 'red', colorHex: '#e15759' },
+	jsArrays: { label: 'JS arrays', color: 'cyan', colorHex: '#76b7b2' },
+	typedArrays: { label: 'Typed arrays', color: 'green', colorHex: '#59a14f' },
+	systemObjects: { label: 'System objects', color: 'yellow', colorHex: '#edc949' },
+	otherJsObjects: { label: 'Other JS objs', color: 'violet', colorHex: '#af7aa1' },
+	otherNonJsObjects: { label: 'Other non-JS objs', color: 'pink', colorHex: '#ff9da7' },
+} as const satisfies Record<string, { label: string; color: string; colorHex: string }>;
+
+export type HeapSnapshotData = {
+	categories: Record<keyof typeof heapSnapshotCategory, number>;
+	nodeCounts: Record<keyof typeof heapSnapshotCategory, number>;
+	breakdowns?: Record<keyof typeof heapSnapshotCategory, Record<string, number>>;
+};
+
+export type HeapSnapshotReport = {
+	summary: HeapSnapshotData;
+	samples: {
+		round: number;
+		data: HeapSnapshotData;
+	}[];
+};
+
+export const defaultHeapSnapshotBreakdownTopN = 6;
+
+export function createEmptyHeapSnapshotData(): HeapSnapshotData {
+	const categories = {} as HeapSnapshotData['categories'];
+	const nodeCounts = {} as HeapSnapshotData['nodeCounts'];
+	for (const category of Object.keys(heapSnapshotCategory) as (keyof typeof heapSnapshotCategory)[]) {
+		categories[category] = 0;
+		nodeCounts[category] = 0;
+	}
+	return {
+		categories,
+		nodeCounts,
+		breakdowns: {} as HeapSnapshotData['breakdowns'],
+	};
+}
+
+function sanitizeHeapSnapshotBreakdownLabel(value: unknown, fallback = 'unknown') {
+	const label = String(value ?? '').replace(/\s+/g, ' ').trim();
+	if (label === '') return fallback;
+	if (label.length <= 80) return label;
+	return `${label.slice(0, 77)}...`;
+}
+
+function classifyHeapSnapshotBreakdown(category: keyof typeof heapSnapshotCategory, type: string, name: string) {
+	if (category === 'strings') return type;
+
+	if (category === 'jsArrays') {
+		if (type === 'array elements') return 'Array elements';
+		if (type === 'object' && name === 'Array') return 'Array objects';
+		return sanitizeHeapSnapshotBreakdownLabel(`${type}: ${name}`);
+	}
+
+	if (category === 'typedArrays') {
+		if (name === 'system / JSArrayBufferData') return 'ArrayBuffer data';
+		return sanitizeHeapSnapshotBreakdownLabel(`${type}: ${name}`);
+	}
+
+	if (category === 'systemObjects') {
+		if (name.startsWith('system /')) return sanitizeHeapSnapshotBreakdownLabel(name);
+		if (name.startsWith('(system ')) return sanitizeHeapSnapshotBreakdownLabel(name);
+		return sanitizeHeapSnapshotBreakdownLabel(`${type}: ${name}`, type);
+	}
+
+	if (category === 'otherJsObjects') {
+		if (type === 'object') return sanitizeHeapSnapshotBreakdownLabel(`object: ${name}`, 'object: unknown');
+		return type;
+	}
+
+	if (category === 'otherNonJsObjects') {
+		if (type === 'extra native bytes') return 'Extra native bytes';
+		if (type === 'native') return sanitizeHeapSnapshotBreakdownLabel(`native: ${name}`, 'native: unknown');
+		return sanitizeHeapSnapshotBreakdownLabel(`${type}: ${name}`, type);
+	}
+
+	if (category === 'code') {
+		const lowerName = name.toLowerCase();
+		if (lowerName.includes('bytecode')) return 'bytecode';
+		if (lowerName.includes('builtin')) return 'builtins';
+		if (lowerName.includes('regexp')) return 'regexp code';
+		if (lowerName.includes('stub')) return 'stubs';
+		return sanitizeHeapSnapshotBreakdownLabel(`code: ${name}`, 'code: unknown');
+	}
+
+	return sanitizeHeapSnapshotBreakdownLabel(`${type}: ${name}`, type);
+}
+
+export function collapseHeapSnapshotBreakdown(breakdown: Record<string, number>, topN = defaultHeapSnapshotBreakdownTopN) {
+	const entries = Object.entries(breakdown)
+		.filter(([, value]) => value > 0)
+		.toSorted((a, b) => b[1] - a[1]);
+
+	const topEntries = entries.slice(0, topN);
+	const otherValue = entries
+		.slice(topN)
+		.reduce((sum, [, value]) => sum + value, 0);
+
+	const collapsed = Object.fromEntries(topEntries);
+	if (otherValue > 0) collapsed.Other = otherValue;
+	return collapsed;
+}
+
+export function collapseHeapSnapshotBreakdowns(
+	breakdowns: Partial<Record<keyof typeof heapSnapshotCategory, Record<string, number>>>,
+	topN = defaultHeapSnapshotBreakdownTopN,
+) {
+	const collapsed = {} as NonNullable<HeapSnapshotData['breakdowns']>;
+	for (const category of Object.keys(heapSnapshotCategory) as (keyof typeof heapSnapshotCategory)[]) {
+		if (category === 'total') continue;
+
+		const categoryBreakdown = breakdowns[category];
+		if (categoryBreakdown == null) continue;
+
+		const collapsedCategory = collapseHeapSnapshotBreakdown(categoryBreakdown, topN);
+		if (Object.keys(collapsedCategory).length > 0) {
+			collapsed[category] = collapsedCategory;
+		}
+	}
+
+	return collapsed;
+}
+
+// Keep these buckets aligned with Chrome DevTools' heap snapshot Statistics view.
+export function analyzeHeapSnapshot(snapshot: any, options: { breakdownTopN?: number } = {}): HeapSnapshotData {
+	const meta = snapshot?.snapshot?.meta;
+	const nodes = snapshot?.nodes;
+	const edges = snapshot?.edges;
+	const strings = snapshot?.strings;
+	if (meta == null || !Array.isArray(nodes) || !Array.isArray(edges) || !Array.isArray(strings)) {
+		throw new Error('Invalid heap snapshot format');
+	}
+
+	const nodeFields = meta.node_fields;
+	if (!Array.isArray(nodeFields)) throw new Error('Invalid heap snapshot node fields');
+	const edgeFields = meta.edge_fields;
+	if (!Array.isArray(edgeFields)) throw new Error('Invalid heap snapshot edge fields');
+
+	const typeOffset = nodeFields.indexOf('type');
+	const nameOffset = nodeFields.indexOf('name');
+	const selfSizeOffset = nodeFields.indexOf('self_size');
+	const edgeCountOffset = nodeFields.indexOf('edge_count');
+	if (typeOffset < 0 || nameOffset < 0 || selfSizeOffset < 0 || edgeCountOffset < 0) {
+		throw new Error('Heap snapshot is missing required node fields');
+	}
+	const edgeTypeOffset = edgeFields.indexOf('type');
+	const edgeNameOffset = edgeFields.indexOf('name_or_index');
+	const edgeToNodeOffset = edgeFields.indexOf('to_node');
+	if (edgeTypeOffset < 0 || edgeNameOffset < 0 || edgeToNodeOffset < 0) {
+		throw new Error('Heap snapshot is missing required edge fields');
+	}
+
+	const nodeTypeNames = meta.node_types?.[typeOffset];
+	if (!Array.isArray(nodeTypeNames)) throw new Error('Invalid heap snapshot node types');
+	const edgeTypeNames = meta.edge_types?.[edgeTypeOffset];
+	if (!Array.isArray(edgeTypeNames)) throw new Error('Invalid heap snapshot edge types');
+
+	const nodeFieldCount = nodeFields.length;
+	const edgeFieldCount = edgeFields.length;
+	const nativeType = nodeTypeNames.indexOf('native');
+	const codeType = nodeTypeNames.indexOf('code');
+	const hiddenType = nodeTypeNames.indexOf('hidden');
+	const stringTypes = new Set([
+		nodeTypeNames.indexOf('string'),
+		nodeTypeNames.indexOf('concatenated string'),
+		nodeTypeNames.indexOf('sliced string'),
+	]);
+	const internalEdgeType = edgeTypeNames.indexOf('internal');
+	const extraNativeBytes = Number.isFinite(snapshot.snapshot.extra_native_bytes) ? snapshot.snapshot.extra_native_bytes : 0;
+	const { categories, nodeCounts } = createEmptyHeapSnapshotData();
+	const breakdowns = {} as Record<keyof typeof heapSnapshotCategory, Record<string, number>>;
+	for (const category of Object.keys(heapSnapshotCategory) as (keyof typeof heapSnapshotCategory)[]) {
+		if (category !== 'total') breakdowns[category] = {};
+	}
+
+	function addValue(map: Record<string, number>, key: string, value: number) {
+		map[key] = (map[key] ?? 0) + value;
+	}
+
+	const edgeStartIndexes = new Map<number, number>();
+	const retainerCounts = new Map<number, number>();
+	let edgeIndex = 0;
+	for (let nodeIndex = 0; nodeIndex < nodes.length; nodeIndex += nodeFieldCount) {
+		edgeStartIndexes.set(nodeIndex, edgeIndex);
+		const edgeCount = nodes[nodeIndex + edgeCountOffset] ?? 0;
+		for (let i = 0; i < edgeCount; i++, edgeIndex += edgeFieldCount) {
+			const toNodeIndex = edges[edgeIndex + edgeToNodeOffset];
+			retainerCounts.set(toNodeIndex, (retainerCounts.get(toNodeIndex) ?? 0) + 1);
+		}
+	}
+
+	const jsArrayElementNodeIndexes = new Set<number>();
+
+	function addCategoryValue(category: keyof typeof heapSnapshotCategory, value: number, type: string, name: string, nodeIndex: number | null = null) {
+		if (value <= 0) return;
+		categories[category] += value;
+		addValue(breakdowns[category], classifyHeapSnapshotBreakdown(category, type, name), value);
+		if (nodeIndex != null) nodeCounts[category]++;
+	}
+
+	function addJsArrayElementSize(nodeIndex: number) {
+		const beginEdgeIndex = edgeStartIndexes.get(nodeIndex) ?? 0;
+		const edgeCount = nodes[nodeIndex + edgeCountOffset] ?? 0;
+		for (let i = 0, currentEdgeIndex = beginEdgeIndex; i < edgeCount; i++, currentEdgeIndex += edgeFieldCount) {
+			const edgeType = edges[currentEdgeIndex + edgeTypeOffset];
+			if (edgeType !== internalEdgeType) continue;
+
+			const edgeName = strings[edges[currentEdgeIndex + edgeNameOffset]];
+			if (edgeName !== 'elements') continue;
+
+			const elementsNodeIndex = edges[currentEdgeIndex + edgeToNodeOffset];
+			if ((retainerCounts.get(elementsNodeIndex) ?? 0) === 1) {
+				const elementsSize = nodes[elementsNodeIndex + selfSizeOffset] ?? 0;
+				addCategoryValue('jsArrays', elementsSize, 'array elements', 'Array elements', elementsNodeIndex);
+				jsArrayElementNodeIndexes.add(elementsNodeIndex);
+			}
+			break;
+		}
+	}
+
+	if (extraNativeBytes > 0) {
+		addCategoryValue('otherNonJsObjects', extraNativeBytes, 'extra native bytes', 'extra native bytes');
+	}
+
+	for (let nodeIndex = 0; nodeIndex < nodes.length; nodeIndex += nodeFieldCount) {
+		const typeId = nodes[nodeIndex + typeOffset];
+		const type = nodeTypeNames[typeId] ?? 'unknown';
+		const name = strings[nodes[nodeIndex + nameOffset]] ?? '';
+		const selfSize = nodes[nodeIndex + selfSizeOffset] ?? 0;
+		categories.total += selfSize;
+		nodeCounts.total++;
+
+		if (typeId === hiddenType) {
+			addCategoryValue('systemObjects', selfSize, type, name, nodeIndex);
+			continue;
+		}
+
+		if (typeId === nativeType) {
+			if (name === 'system / JSArrayBufferData') {
+				addCategoryValue('typedArrays', selfSize, type, name, nodeIndex);
+			} else {
+				addCategoryValue('otherNonJsObjects', selfSize, type, name, nodeIndex);
+			}
+			continue;
+		}
+
+		if (typeId === codeType) {
+			addCategoryValue('code', selfSize, type, name, nodeIndex);
+			continue;
+		}
+
+		if (stringTypes.has(typeId)) {
+			addCategoryValue('strings', selfSize, type, name, nodeIndex);
+			continue;
+		}
+
+		if (name === 'Array') {
+			addCategoryValue('jsArrays', selfSize, type, name, nodeIndex);
+			addJsArrayElementSize(nodeIndex);
+			continue;
+		}
+	}
+
+	categories.total += extraNativeBytes;
+
+	for (let nodeIndex = 0; nodeIndex < nodes.length; nodeIndex += nodeFieldCount) {
+		if (jsArrayElementNodeIndexes.has(nodeIndex)) continue;
+
+		const typeId = nodes[nodeIndex + typeOffset];
+		if (typeId === hiddenType || typeId === nativeType || typeId === codeType || stringTypes.has(typeId)) continue;
+
+		const name = strings[nodes[nodeIndex + nameOffset]] ?? '';
+		if (name === 'Array') continue;
+
+		const type = nodeTypeNames[typeId] ?? 'unknown';
+		const selfSize = nodes[nodeIndex + selfSizeOffset] ?? 0;
+		addCategoryValue('otherJsObjects', selfSize, type, name, nodeIndex);
+	}
+
+	return {
+		categories,
+		nodeCounts,
+		breakdowns: collapseHeapSnapshotBreakdowns(breakdowns, options.breakdownTopN),
+	};
+}
+
+function finiteMedian(values: (number | null | undefined)[]) {
+	const finiteValues = values.filter(value => Number.isFinite(value)) as number[];
+	if (finiteValues.length === 0) return null;
+	return util.median(finiteValues);
+}
+
+export function summarizeHeapSnapshotDataSamples<T>(
+	samples: T[],
+	getData: (sample: T) => HeapSnapshotData | null | undefined,
+	options: { breakdownTopN?: number } = {},
+) {
+	const data = samples.map(getData);
+	const categories = {} as HeapSnapshotData['categories'];
+	for (const category of Object.keys(heapSnapshotCategory) as (keyof typeof heapSnapshotCategory)[]) {
+		const value = finiteMedian(data.map(snapshot => snapshot?.categories?.[category]));
+		if (value != null) categories[category] = value;
+	}
+
+	const nodeCounts = {} as HeapSnapshotData['nodeCounts'];
+	for (const category of Object.keys(heapSnapshotCategory) as (keyof typeof heapSnapshotCategory)[]) {
+		const value = finiteMedian(data.map(snapshot => snapshot?.nodeCounts?.[category]));
+		if (value != null) nodeCounts[category] = value;
+	}
+
+	if (Object.keys(categories).length === 0) return null;
+
+	const breakdowns = {} as NonNullable<HeapSnapshotData['breakdowns']>;
+	for (const category of Object.keys(heapSnapshotCategory) as (keyof typeof heapSnapshotCategory)[]) {
+		if (category === 'total') continue;
+
+		const childKeys = new Set<string>();
+		for (const snapshot of data) {
+			for (const childKey of Object.keys(snapshot?.breakdowns?.[category] ?? {})) {
+				childKeys.add(childKey);
+			}
+		}
+
+		const categoryBreakdown = {} as Record<string, number>;
+		for (const childKey of childKeys) {
+			const value = finiteMedian(data.map(snapshot => snapshot?.breakdowns?.[category]?.[childKey]));
+			if (value != null) categoryBreakdown[childKey] = value;
+		}
+
+		const collapsed = collapseHeapSnapshotBreakdown(categoryBreakdown, options.breakdownTopN);
+		if (Object.keys(collapsed).length > 0) {
+			breakdowns[category] = collapsed;
+		}
+	}
+
+	return {
+		categories,
+		nodeCounts,
+		...(Object.keys(breakdowns).length > 0 ? { breakdowns } : {}),
+	};
+}
+
+function getHeapSnapshotCategoryValue(report: HeapSnapshotReport, category: keyof typeof heapSnapshotCategory) {
+	return report.summary.categories[category];
+}
+
+export function renderHeapSnapshotTable(base: HeapSnapshotReport, head: HeapSnapshotReport) {
+	const lines = [
+		'| Metric | Base | Head | Δ median | Δ MAD | Δ min | Δ max |',
+		'| --- | ---: | ---: | ---: | ---: | ---: | ---: |',
+	];
+	const baseTotal = getHeapSnapshotCategoryValue(base, 'total');
+	const headTotal = getHeapSnapshotCategoryValue(head, 'total');
+
+	function getHeapSnapshotSampleSpread(report: HeapSnapshotReport, category: keyof typeof heapSnapshotCategory) {
+		const values = report.samples
+			.map(sample => sample.data.categories[category])
+			.filter(value => Number.isFinite(value)) as number[];
+		if (values.length < 2) throw new Error(`Not enough samples for category ${category}`);
+
+		const center = util.median(values);
+		return util.median(values.map(value => Math.abs(value - center)));
+	}
+
+	for (const category of Object.keys(heapSnapshotCategory) as (keyof typeof heapSnapshotCategory)[]) {
+		const baseValue = getHeapSnapshotCategoryValue(base, category);
+		const headValue = getHeapSnapshotCategoryValue(head, category);
+		const baseSpread = getHeapSnapshotSampleSpread(base, category);
+		const headSpread = getHeapSnapshotSampleSpread(head, category);
+		const summary = util.pairedDeltaSummary(base.samples, head.samples, (sample) => sample.data.categories[category]);
+		const percent = summary.median * 100 / baseValue;
+
+		if (category === 'total') {
+			const deltaMedian = `${util.formatDeltaBytes(summary.median, 100000)}<br>${util.formatDeltaPercent(percent, 0.1).replaceAll('\\%', '\\\\%')}`;
+			const baseText = `${util.formatBytes(baseValue)} <br> ± ${util.formatBytes(baseSpread)}`;
+			const headText = `${util.formatBytes(headValue)} <br> ± ${util.formatBytes(headSpread)}`;
+			const metricText = `$\\color{${heapSnapshotCategory[category].color}}{\\rule{8pt}{8pt}}$ **${heapSnapshotCategory[category].label}**`;
+			lines.push(`| ${metricText} | ${baseText} | ${headText} | ${deltaMedian} | ${util.formatBytes(summary.mad)} | ${util.formatDeltaBytes(summary.min, 100000)} | ${util.formatDeltaBytes(summary.max, 100000)} |`);
+			lines.push('| | | | | | | |');
+		} else {
+			const deltaMedian = util.formatDeltaBytes(summary.median, 100000);
+			const baseText = util.formatBytes(baseValue);
+			const headText = util.formatBytes(headValue);
+			const basePercent = util.formatPercent((baseValue * 100) / baseTotal);
+			const headPercent = util.formatPercent((headValue * 100) / headTotal);
+			const metricText = `<details><summary>$\\color{${heapSnapshotCategory[category].color}}{\\rule{8pt}{8pt}}$ **${heapSnapshotCategory[category].label}**</summary>${basePercent} → ${headPercent}</details>`;
+			lines.push(`| ${metricText} | ${baseText} | ${headText} | ${deltaMedian} | ${util.formatBytes(summary.mad)} | ${util.formatDeltaBytes(summary.min, 100000)} | ${util.formatDeltaBytes(summary.max, 100000)} |`);
+		}
+	}
+
+	if (lines.length === 2) return null;
+	return lines.join('\n');
+}
+
+const heapSnapshotSankeyChildMinRatio = 0.3;
+const heapSnapshotSankeyParentMinPercent = 10;
+
+function escapeCsvValue(value: string) {
+	return `"${String(value).replaceAll('"', '""')}"`;
+}
+
+export function renderHeapSnapshotSankey(report: HeapSnapshotReport, title: string) {
+	const total = getHeapSnapshotCategoryValue(report, 'total');
+	if (total == null || total <= 0) return null;
+
+	function getHeapSnapshotBreakdownEntries(category: keyof typeof heapSnapshotCategory) {
+		const breakdown = report.summary.breakdowns?.[category];
+		if (breakdown == null || typeof breakdown !== 'object') return [];
+
+		return Object.entries(breakdown)
+			.filter(([, value]) => Number.isFinite(value) && value > 0)
+			.toSorted((a, b) => b[1] - a[1]);
+	}
+
+	function formatHeapSnapshotSankeyChildLabel(label: string) {
+		return String(label).replace(/^[^:]+:\s*/, '');
+	}
+
+	function formatSankeyPercentValue(value: number) {
+		const rounded = Math.round(value * 100) / 100;
+		if (rounded === 0 && value > 0) return '0.01';
+		if (Number.isInteger(rounded)) return String(rounded);
+		return rounded.toFixed(2).replace(/0+$/, '').replace(/\.$/, '');
+	}
+
+	const categories = (Object.keys(heapSnapshotCategory) as (keyof typeof heapSnapshotCategory)[])
+		.filter(category => category !== 'total')
+		.map(category => {
+			const value = getHeapSnapshotCategoryValue(report, category);
+			if (value == null || value <= 0) return null;
+			const breakdownEntries = getHeapSnapshotBreakdownEntries(category);
+			const breakdownTotal = breakdownEntries.reduce((sum, [, childValue]) => sum + childValue, 0);
+			const percent = (value * 100) / total;
+			const childEntries = [];
+			let otherPercent = 0;
+
+			if (breakdownTotal > 0 && percent > heapSnapshotSankeyParentMinPercent) {
+				for (const [childName, childValue] of breakdownEntries) {
+					const childRatio = childValue / breakdownTotal;
+					const childPercent = percent * childRatio;
+					if (childRatio >= heapSnapshotSankeyChildMinRatio) {
+						childEntries.push([formatHeapSnapshotSankeyChildLabel(childName), childPercent]);
+					} else {
+						otherPercent += childPercent;
+					}
+				}
+
+				if (childEntries.length > 0 && otherPercent > 0) {
+					childEntries.push(['Other', otherPercent]);
+				}
+			}
+
+			return {
+				category,
+				percent,
+				childEntries,
+			};
+		})
+		.filter(value => value != null);
+
+	if (categories.length === 0) return null;
+
+	const nodeColors = {
+		[title]: heapSnapshotCategory.total.colorHex,
+	} as Record<string, string>;
+	for (const { category, childEntries } of categories) {
+		const categoryColor = heapSnapshotCategory[category].colorHex;
+		nodeColors[category] = categoryColor;
+
+		for (const [childName] of childEntries) {
+			nodeColors[childName] = categoryColor;
+		}
+	}
+
+	const lines = [
+		`<details><summary>${title} heap snapshot composition</summary>`,
+		'',
+		'```mermaid',
+		`%%{init: ${JSON.stringify({
+			sankey: {
+				showValues: false,
+				linkColor: 'target',
+				labelStyle: 'outlined',
+				nodeAlignment: 'center',
+				nodePadding: 10,
+				nodeColors: {
+					...nodeColors,
+					'Other': '#888888',
+				},
+			},
+		})}}%%`,
+		'sankey-beta',
+	];
+
+	for (const { category, percent, childEntries } of categories) {
+		lines.push(`${escapeCsvValue(title)},${escapeCsvValue(heapSnapshotCategory[category].label)},${formatSankeyPercentValue(percent)}`);
+
+		for (const [childName, childPercent] of childEntries) {
+			lines.push(`${escapeCsvValue(heapSnapshotCategory[category].label)},${escapeCsvValue(childName)},${formatSankeyPercentValue(childPercent)}`);
+		}
+	}
+
+	lines.push('```');
+	lines.push('');
+	lines.push('</details>');
+
+	return lines.join('\n');
+}

.github/scripts/memory-stability-util.mts

@@ -0,0 +1,75 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { setTimeout } from 'node:timers/promises';
+
+type MemoryStabilityTimer = {
+	now: () => number;
+	wait: (durationMs: number) => Promise<void>;
+};
+
+const intervalMs = 2000;
+const maxWaitMs = 10000;
+const windowSize = 3;
+const slopeThresholdKiBPerSecond = 256;
+const stabilityMetrics = ['Pss', 'Private_Dirty'] as const;
+
+const defaultTimer: MemoryStabilityTimer = {
+	now: () => performance.now(),
+	wait: durationMs => setTimeout(durationMs),
+};
+
+function getMaxAbsoluteSlopes<T extends Record<string, number>>(readings: { elapsedMs: number; memoryUsage: T }[]) {
+	const result = {} as Record<typeof stabilityMetrics[number], number>;
+
+	for (const metric of stabilityMetrics) {
+		let maxAbsoluteSlope = 0;
+		for (let i = 1; i < readings.length; i++) {
+			const previous = readings[i - 1];
+			const current = readings[i];
+			const durationSeconds = (current.elapsedMs - previous.elapsedMs) / 1000;
+			maxAbsoluteSlope = Math.max(maxAbsoluteSlope, Math.abs(current.memoryUsage[metric] - previous.memoryUsage[metric]) / durationSeconds);
+		}
+		result[metric] = maxAbsoluteSlope;
+	}
+
+	return result;
+}
+
+export async function measureMemoryUntilStable<T extends Record<string, number>>(
+	readMemoryUsage: () => Promise<T>,
+	timer: MemoryStabilityTimer = defaultTimer,
+) {
+	const startedAt = timer.now();
+	const readings: { elapsedMs: number; memoryUsage: T }[] = [];
+	let maxAbsoluteSlopesKiBPerSecond: Record<typeof stabilityMetrics[number], number> | null = null;
+
+	while (true) {
+		const memoryUsage = await readMemoryUsage();
+		const elapsedMs = timer.now() - startedAt;
+		readings.push({ elapsedMs, memoryUsage });
+
+		let converged = false;
+		if (readings.length >= windowSize) {
+			const latestSlopes = getMaxAbsoluteSlopes(readings.slice(-windowSize));
+			maxAbsoluteSlopesKiBPerSecond = latestSlopes;
+			converged = stabilityMetrics.every(metric => latestSlopes[metric] <= slopeThresholdKiBPerSecond);
+		}
+
+		if (converged || elapsedMs >= maxWaitMs) {
+			return {
+				memoryUsage,
+				stability: {
+					converged,
+					readingCount: readings.length,
+					elapsedMs,
+					maxAbsoluteSlopesKiBPerSecond,
+				},
+			};
+		}
+
+		await timer.wait(Math.min(intervalMs, maxWaitMs - elapsedMs));
+	}
+}

.github/scripts/memory-stability-util.test.mts

@@ -0,0 +1,110 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { measureMemoryUntilStable } from './memory-stability-util.mts';
+
+function createTimer() {
+	let elapsedMs = 0;
+
+	return {
+		now: () => elapsedMs,
+		wait: async (durationMs: number) => {
+			elapsedMs += durationMs;
+		},
+	};
+}
+
+async function measure(readings: Record<string, number>[]) {
+	let readCount = 0;
+	const result = await measureMemoryUntilStable(
+		async () => readings[readCount++],
+		createTimer(),
+	);
+	return { result, readCount };
+}
+
+test('adopts the latest reading once Pss and Private_Dirty slopes converge', async () => {
+	const readings = [
+		{ Pss: 1000, Private_Dirty: 500, HeapUsed: 300 },
+		{ Pss: 1100, Private_Dirty: 520, HeapUsed: 310 },
+		{ Pss: 1200, Private_Dirty: 540, HeapUsed: 320 },
+	];
+	const { result, readCount } = await measure(readings);
+
+	assert.equal(readCount, 3);
+	assert.deepEqual(result.memoryUsage, readings[2]);
+	assert.deepEqual(result.stability, {
+		converged: true,
+		readingCount: 3,
+		elapsedMs: 4000,
+		maxAbsoluteSlopesKiBPerSecond: {
+			Pss: 50,
+			Private_Dirty: 10,
+		},
+	});
+});
+
+test('uses only the latest readings when determining convergence', async () => {
+	const readings = [
+		{ Pss: 1000, Private_Dirty: 500 },
+		{ Pss: 2000, Private_Dirty: 1000 },
+		{ Pss: 3000, Private_Dirty: 1500 },
+		{ Pss: 3040, Private_Dirty: 1520 },
+		{ Pss: 3080, Private_Dirty: 1540 },
+	];
+	const { result, readCount } = await measure(readings);
+
+	assert.equal(readCount, 5);
+	assert.equal(result.stability.converged, true);
+	assert.deepEqual(result.stability.maxAbsoluteSlopesKiBPerSecond, {
+		Pss: 20,
+		Private_Dirty: 10,
+	});
+});
+
+test('bounds the wait and reports the latest slopes when memory does not converge', async () => {
+	const readings = [
+		{ Pss: 1000, Private_Dirty: 500 },
+		{ Pss: 1600, Private_Dirty: 520 },
+		{ Pss: 2200, Private_Dirty: 540 },
+		{ Pss: 2800, Private_Dirty: 560 },
+		{ Pss: 3400, Private_Dirty: 580 },
+		{ Pss: 4000, Private_Dirty: 600 },
+	];
+	const { result, readCount } = await measure(readings);
+
+	assert.equal(readCount, 6);
+	assert.deepEqual(result.memoryUsage, readings[5]);
+	assert.deepEqual(result.stability, {
+		converged: false,
+		readingCount: 6,
+		elapsedMs: 10000,
+		maxAbsoluteSlopesKiBPerSecond: {
+			Pss: 300,
+			Private_Dirty: 10,
+		},
+	});
+});
+
+test('does not treat opposing adjacent slopes as convergence', async () => {
+	const readings = [
+		{ Pss: 1000, Private_Dirty: 500 },
+		{ Pss: 1600, Private_Dirty: 500 },
+		{ Pss: 1000, Private_Dirty: 500 },
+		{ Pss: 1600, Private_Dirty: 500 },
+		{ Pss: 1000, Private_Dirty: 500 },
+		{ Pss: 1600, Private_Dirty: 500 },
+	];
+	const { result, readCount } = await measure(readings);
+
+	assert.equal(readCount, 6);
+	assert.equal(result.stability.converged, false);
+	assert.deepEqual(result.stability.maxAbsoluteSlopesKiBPerSecond, {
+		Pss: 300,
+		Private_Dirty: 0,
+	});
+});

.github/scripts/utility.mts

@@ -0,0 +1,311 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+// NOTE: このファイルはworkflow上でバックエンドからも参照されるため、side effectがあってはならない
+
+import { spawn, spawnSync, type ChildProcessWithoutNullStreams } from 'node:child_process';
+import { promises as fs } from 'node:fs';
+import path from 'node:path';
+
+export function sleep(ms: number) {
+	return new Promise(resolvePromise => setTimeout(resolvePromise, ms));
+}
+
+export function median(values: number[]) {
+	const sorted = values.toSorted((a, b) => a - b);
+	const center = Math.floor(sorted.length / 2);
+	if (sorted.length % 2 === 1) return sorted[center];
+	return Math.round((sorted[center - 1] + sorted[center]) / 2);
+}
+
+export function mad(values: number[]) {
+	if (values.length < 2) throw new Error('Not enough samples to calculate MAD');
+
+	const center = median(values);
+	return median(values.map(value => Math.abs(value - center)));
+}
+
+function getSamplesByRound<T extends { round: number; }[]>(samples: T) {
+	const samplesByRound = new Map<number, T[number]>();
+	for (const sample of samples) {
+		if (sample.round <= 0) continue;
+		samplesByRound.set(sample.round, sample);
+	}
+	return samplesByRound;
+}
+
+export function pairedDeltaSummary<T extends { round: number; }[]>(baseSamples: T, headSamples: T, getValue: (sample: T[number]) => number | null) {
+	const baseSamplesByRound = getSamplesByRound(baseSamples);
+	const headSamplesByRound = getSamplesByRound(headSamples);
+	const values = [];
+
+	for (const [round, baseSample] of baseSamplesByRound) {
+		const headSample = headSamplesByRound.get(round);
+		if (headSample == null) continue;
+
+		const baseValue = getValue(baseSample);
+		const headValue = getValue(headSample);
+		if (baseValue == null || headValue == null) continue;
+
+		values.push(headValue - baseValue);
+	}
+
+	return {
+		median: median(values),
+		mad: mad(values),
+		min: Math.min(...values),
+		max: Math.max(...values),
+		samples: values.length,
+	};
+}
+
+export function normalizePath(filePath: string) {
+	return filePath.split(path.sep).join('/');
+}
+
+export async function fileExists(filePath: string) {
+	try {
+		await fs.access(filePath);
+		return true;
+	} catch {
+		return false;
+	}
+}
+
+export async function fileSize(filePath: string) {
+	const stat = await fs.stat(filePath);
+	return stat.size;
+}
+
+export async function* traverseDirectory(dir: string): AsyncGenerator<string> {
+	for (const entry of await fs.readdir(dir, { withFileTypes: true })) {
+		const fullPath = path.join(dir, entry.name);
+		if (entry.isDirectory()) {
+			yield* traverseDirectory(fullPath);
+		} else if (entry.isFile()) {
+			yield fullPath;
+		}
+	}
+}
+
+export function escapeLatex(text: string) {
+	return text
+		.replaceAll('\\', '\\\\')
+		.replaceAll('{', '\\{')
+		.replaceAll('}', '\\}')
+		.replaceAll('%', '\\%');
+}
+
+export function escapeMdTableCell(value: string) {
+	return String(value).replaceAll('|', '\\|').replaceAll('\n', '<br>');
+}
+
+export function formatMs(value: number | null | undefined) {
+	if (value == null || !Number.isFinite(value)) return '-';
+	if (value >= 1_000) return `${formatNumber(value / 1_000)} s`;
+	return `${formatNumber(value)} ms`;
+}
+
+export function formatSecondsAsMs(value: number | null | undefined) {
+	if (value == null || !Number.isFinite(value)) return '-';
+	return formatMs(value * 1_000);
+}
+
+export function formatColoredDelta(delta: number, text: (value: number) => string, colorThreshold = 0) {
+	if (delta === 0) return text(0);
+	const sign = delta > 0 ? '+' : '-';
+	if (Math.abs(delta) < colorThreshold) return `$\\text{${sign}${escapeLatex(text(Math.abs(delta)))}}$`;
+	const color = delta > 0 ? 'orange' : 'green';
+	return `$\\color{${color}}{\\text{${sign}${escapeLatex(text(Math.abs(delta)))}}}$`;
+}
+
+const numberFormatter = new Intl.NumberFormat('en-US', {
+	maximumFractionDigits: 1,
+});
+
+export function formatNumber(value: number) {
+	return numberFormatter.format(value);
+}
+
+export function formatBytes(value: number) {
+	if (value === 0) return '0 B';
+	const units = ['B', 'KB', 'MB', 'GB'];
+	let unitIndex = 0;
+	let size = value;
+	while (size >= 1000 && unitIndex < units.length - 1) {
+		size /= 1000;
+		unitIndex += 1;
+	}
+
+	const maximumFractionDigits = size >= 10 || unitIndex === 0 ? 0 : 1;
+	return `${numberFormatter.format(Number(size.toFixed(maximumFractionDigits)))} ${units[unitIndex]}`;
+}
+
+export function calcAndFormatDeltaNumber(before: number, after: number, colorThreshold = 0) {
+	if (before == null || after == null) return '-';
+	const delta = after - before;
+	return formatColoredDelta(delta, v => formatNumber(v), colorThreshold);
+}
+
+export function formatDeltaBytes(deltaBytes: number, colorThreshold = 0) {
+	return formatColoredDelta(deltaBytes, v => formatBytes(v), colorThreshold);
+}
+
+export function calcAndFormatDeltaBytes(before: number, after: number, colorThreshold = 0) {
+	if (before == null || after == null) return '-';
+	const delta = after - before;
+	return formatDeltaBytes(delta, colorThreshold);
+}
+
+export function formatPercent(value: number) {
+	return `${formatNumber(value)}%`;
+}
+
+export function formatDeltaPercent(deltaPercent: number, colorThreshold = 0) {
+	return formatColoredDelta(deltaPercent, v => formatPercent(v), colorThreshold);
+}
+
+export function calcAndFormatDeltaPercent(before: number, after: number, colorThreshold = 0) {
+	if (before == null || before === 0 || after == null || after === 0) return '-';
+	const delta = after - before;
+	return formatDeltaPercent(delta / before * 100, colorThreshold);
+}
+
+export function commandName(command: string) {
+	if (process.platform !== 'win32') return command;
+	if (command === 'pnpm') return 'pnpm.cmd';
+	return command;
+}
+
+export function readIntegerEnv(name: string, defaultValue: number, min: number) {
+	const rawValue = process.env[name];
+	if (rawValue == null || rawValue === '') return defaultValue;
+	if (!/^\d+$/.test(rawValue)) throw new Error(`${name} must be an integer`);
+
+	const value = Number(rawValue);
+	if (!Number.isSafeInteger(value) || value < min) throw new Error(`${name} must be >= ${min}`);
+	return value;
+}
+
+export function run(command: string, args: string[], options: { cwd?: string; env?: NodeJS.ProcessEnv; logStdout?: boolean } = {}) {
+	return new Promise<string>((resolvePromise, reject) => {
+		const child = spawn(commandName(command), args, {
+			cwd: options.cwd,
+			env: options.env,
+			stdio: ['ignore', 'pipe', 'pipe'],
+		});
+
+		let stdout = '';
+		let stderr = '';
+
+		child.stdout.on('data', data => {
+			stdout += data;
+			if (options.logStdout) process.stderr.write(data);
+		});
+
+		child.stderr.on('data', data => {
+			stderr += data;
+			process.stderr.write(data);
+		});
+
+		child.on('error', reject);
+
+		child.on('close', code => {
+			if (code === 0) {
+				resolvePromise(stdout);
+			} else {
+				reject(new Error(`${command} ${args.join(' ')} failed with exit code ${code}\n${stderr}`));
+			}
+		});
+	});
+}
+
+export function startServer(label: string, repoDir: string) {
+	process.stderr.write(`[${label}] Starting Misskey test server\n`);
+	const child = spawn(commandName('pnpm'), ['start:test'], {
+		cwd: repoDir,
+		env: process.env,
+		stdio: ['ignore', 'pipe', 'pipe'],
+		detached: process.platform !== 'win32',
+	});
+	child.stdout.on('data', data => process.stderr.write(`[server:${label}] ${data}`));
+	child.stderr.on('data', data => process.stderr.write(`[server:${label}] ${data}`));
+	return child;
+}
+
+export async function waitForServer(baseUrl: string, child: ChildProcessWithoutNullStreams) {
+	const startedAt = Date.now();
+	while (Date.now() - startedAt < 120_000) {
+		if (child.exitCode != null) throw new Error(`Misskey server exited early with code ${child.exitCode}`);
+		try {
+			const response = await fetch(`${baseUrl}/`, { redirect: 'manual' });
+			if (response.status < 500) return;
+		} catch {
+			// retry
+		}
+		await sleep(1_000);
+	}
+	throw new Error(`Timed out waiting for ${baseUrl}`);
+}
+
+export async function api(baseUrl: string, endpoint: string, body: Record<string, unknown>) {
+	const response = await fetch(`${baseUrl}/api/${endpoint}`, {
+		method: 'POST',
+		headers: {
+			'content-type': 'application/json',
+		},
+		body: JSON.stringify(body),
+	});
+	if (!response.ok) {
+		throw new Error(`/api/${endpoint} returned ${response.status}: ${await response.text()}`);
+	}
+	if (response.status === 204) return null;
+	return await response.json();
+}
+
+export async function prepareInstance(baseUrl: string) {
+	await api(baseUrl, 'reset-db', {});
+	await api(baseUrl, 'admin/accounts/create', {
+		username: 'admin',
+		password: 'admin1234',
+		setupPassword: 'example_password_please_change_this_or_you_will_get_hacked',
+	});
+}
+
+export async function stopServer(child: ChildProcessWithoutNullStreams) {
+	if (child.exitCode != null) return;
+
+	if (process.platform === 'win32') {
+		spawnSync('taskkill', ['/pid', String(child.pid), '/t', '/f'], { stdio: 'ignore' });
+	} else if (child.pid != null) {
+		try {
+			process.kill(-child.pid, 'SIGTERM');
+		} catch {
+			child.kill('SIGTERM');
+		}
+	}
+
+	await new Promise<void>(resolvePromise => {
+		if (child.exitCode != null) {
+			resolvePromise();
+			return;
+		}
+		child.once('exit', () => resolvePromise());
+		setTimeout(() => {
+			if (child.pid != null) {
+				try {
+					if (process.platform === 'win32') {
+						spawnSync('taskkill', ['/pid', String(child.pid), '/t', '/f'], { stdio: 'ignore' });
+					} else {
+						process.kill(-child.pid, 'SIGKILL');
+					}
+				} catch {
+					child.kill('SIGKILL');
+				}
+			}
+			resolvePromise();
+		}, 10_000).unref();
+	});
+}

.github/workflows/api-misskey-js.yml

@@ -16,10 +16,10 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6.0.2
+        uses: actions/checkout@v6.0.3
 
       - name: Setup pnpm
-        uses: pnpm/action-setup@v6.0.3
+        uses: pnpm/action-setup@v6.0.9
 
       - name: Setup Node.js
         uses: actions/setup-node@v6.4.0

.github/workflows/backend-diagnostics.comment.yml

@@ -0,0 +1,76 @@
+name: Backend diagnostics (comment)
+
+on:
+  workflow_run:
+    types: [completed]
+    workflows:
+      - Backend diagnostics (inspect) # backend-diagnostics.inspect.yml
+
+jobs:
+  compare-memory:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    permissions:
+      actions: read
+      contents: read
+      pull-requests: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6.0.3
+
+      - name: Download artifacts
+        uses: actions/download-artifact@v8
+        with:
+          pattern: memory-artifact-*
+          path: artifacts
+          merge-multiple: true
+          github-token: ${{ github.token }}
+          repository: ${{ github.repository }}
+          run-id: ${{ github.event.workflow_run.id }}
+      - name: Check artifacts
+        run: ls -lh artifacts/
+      - name: Load PR Number
+        id: load-pr-num
+        run: echo "pr-number=$(cat artifacts/pr_number)" >> "$GITHUB_OUTPUT"
+      - name: Find heap snapshot artifacts
+        id: find-heap-snapshot-artifacts
+        uses: actions/github-script@v9
+        with:
+          script: |
+            const { owner, repo } = context.repo;
+            const run_id = context.payload.workflow_run.id;
+            const artifacts = await github.paginate(github.rest.actions.listWorkflowRunArtifacts, {
+              owner,
+              repo,
+              run_id,
+            });
+            const artifactNames = {
+              base: 'base-heap-snapshot.heapsnapshot',
+              head: 'head-heap-snapshot.heapsnapshot',
+            };
+            for (const [label, artifactName] of Object.entries(artifactNames)) {
+              const artifact = artifacts.find(artifact => artifact.name === artifactName);
+              if (artifact == null) throw new Error(`Artifact not found: ${artifactName}`);
+              core.setOutput(`${label}-url`, `https://github.com/${owner}/${repo}/actions/runs/${run_id}/artifacts/${artifact.id}`);
+            }
+
+      - id: build-comment
+        name: Build memory comment
+        env:
+          MK_MEMORY_HEAP_SNAPSHOT_ARTIFACT_URL_BASE: ${{ steps.find-heap-snapshot-artifacts.outputs.base-url }}
+          MK_MEMORY_HEAP_SNAPSHOT_ARTIFACT_URL_HEAD: ${{ steps.find-heap-snapshot-artifacts.outputs.head-url }}
+        run: node .github/scripts/backend-diagnostics.render-md.mts ./artifacts/memory-base.json ./artifacts/memory-head.json ./output.md
+      - uses: thollander/actions-comment-pull-request@v3
+        with:
+          pr-number: ${{ steps.load-pr-num.outputs.pr-number }}
+          comment-tag: show_memory_diff
+          file-path: ./output.md
+      - name: Tell error to PR
+        uses: thollander/actions-comment-pull-request@v3
+        if: failure() && steps.load-pr-num.outputs.pr-number
+        with:
+          pr-number: ${{ steps.load-pr-num.outputs.pr-number }}
+          comment-tag: show_memory_diff
+          message: |
+            An error occurred while comparing backend memory usage. See [workflow logs](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}) for details.

.github/workflows/backend-diagnostics.inspect.yml

@@ -0,0 +1,131 @@
+# this name is used in backend-diagnostics.comment.yml so be careful when change name
+name: Backend diagnostics (inspect)
+
+on:
+  pull_request:
+    branches:
+      - master
+      - develop
+    paths:
+      - packages/backend/**
+      - packages/misskey-js/**
+      - .github/scripts/utility.mts
+      - .github/scripts/backend-diagnostics.render-md.mts
+      - .github/scripts/backend-diagnostics.inspect.mts
+      - .github/scripts/memory-stability-util*.mts
+      - .github/workflows/backend-diagnostics.inspect.yml
+      - .github/workflows/backend-diagnostics.comment.yml
+
+jobs:
+  get-memory-usage:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+
+    services:
+      postgres:
+        image: postgres:18
+        ports:
+          - 54312:5432
+        env:
+          POSTGRES_DB: test-misskey
+          POSTGRES_HOST_AUTH_METHOD: trust
+      redis:
+        image: redis:8
+        ports:
+          - 56312:6379
+
+    steps:
+    - name: Checkout base
+      uses: actions/checkout@v6.0.3
+      with:
+        ref: ${{ github.base_ref }}
+        path: base
+        submodules: true
+    - name: Checkout head
+      uses: actions/checkout@v6.0.3
+      with:
+        ref: refs/pull/${{ github.event.number }}/merge
+        path: head
+        submodules: true
+    - name: Setup pnpm
+      uses: pnpm/action-setup@v6.0.9
+      with:
+        package_json_file: head/package.json
+    - name: Use Node.js
+      uses: actions/setup-node@v6.4.0
+      with:
+        node-version-file: 'head/.node-version'
+        cache: 'pnpm'
+        cache-dependency-path: |
+          base/pnpm-lock.yaml
+          head/pnpm-lock.yaml
+    - name: Install base dependencies
+      working-directory: base
+      run: pnpm i --frozen-lockfile
+    - name: Check base pnpm-lock.yaml
+      working-directory: base
+      run: git diff --exit-code pnpm-lock.yaml
+    - name: Configure base
+      working-directory: base
+      run: |
+        cp .github/misskey/test.yml .config/default.yml
+        pnpm compile-config
+    - name: Build base
+      working-directory: base
+      run: pnpm build
+    - name: Install head dependencies
+      working-directory: head
+      run: pnpm i --frozen-lockfile
+    - name: Check head pnpm-lock.yaml
+      working-directory: head
+      run: git diff --exit-code pnpm-lock.yaml
+    - name: Configure head
+      working-directory: head
+      run: |
+        cp .github/misskey/test.yml .config/default.yml
+        pnpm compile-config
+    - name: Build head
+      working-directory: head
+      run: pnpm build
+    - name: Measure backend memory usage
+      env:
+        MK_MEMORY_COMPARE_ROUNDS: 10
+        MK_MEMORY_COMPARE_WARMUP_ROUNDS: 1
+        MK_MEMORY_HEAP_SNAPSHOT: 1
+      run: node head/.github/scripts/backend-diagnostics.inspect.mts base head memory-base.json memory-head.json
+    - name: Upload base heap snapshot
+      uses: actions/upload-artifact@v7
+      with:
+        path: base-heap-snapshot.heapsnapshot
+        archive: false
+        if-no-files-found: error
+        retention-days: 7
+    - name: Upload head heap snapshot
+      uses: actions/upload-artifact@v7
+      with:
+        path: head-heap-snapshot.heapsnapshot
+        archive: false
+        if-no-files-found: error
+        retention-days: 7
+    - name: Upload Artifact
+      uses: actions/upload-artifact@v7
+      with:
+        name: memory-artifact-results
+        path: |
+          memory-base.json
+          memory-head.json
+
+  save-pr-number:
+    runs-on: ubuntu-latest
+    permissions: {}
+    steps:
+      - name: Save PR number
+        env:
+          PR_NUMBER: ${{ github.event.number }}
+        run: |
+          echo "$PR_NUMBER" > ./pr_number
+      - uses: actions/upload-artifact@v7
+        with:
+          name: memory-artifact-pr-number
+          path: pr_number

.github/workflows/changelog-check.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout head
-        uses: actions/checkout@v6.0.2
+        uses: actions/checkout@v6.0.3
       - name: Setup Node.js
         uses: actions/setup-node@v6.4.0
         with:

.github/workflows/check-misskey-js-autogen.yml

@@ -18,7 +18,7 @@ jobs:
     if: ${{ github.event.pull_request.mergeable == null || github.event.pull_request.mergeable == true }}
     steps:
       - name: checkout
-        uses: actions/checkout@v6.0.2
+        uses: actions/checkout@v6.0.3
         with:
           submodules: true
           persist-credentials: false
@@ -66,7 +66,7 @@ jobs:
     if: ${{ github.event.pull_request.mergeable == null || github.event.pull_request.mergeable == true }}
     steps:
       - name: checkout
-        uses: actions/checkout@v6.0.2
+        uses: actions/checkout@v6.0.3
         with:
           submodules: true
           persist-credentials: false

.github/workflows/check-misskey-js-version.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6.0.2
+        uses: actions/checkout@v6.0.3
       - name: Check version
         run: |
           if [ "$(jq -r '.version' package.json)" != "$(jq -r '.version' packages/misskey-js/package.json)" ]; then

.github/workflows/check-spdx-license-id.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6.0.2
+        uses: actions/checkout@v6.0.3
       - name: Check
         run: |
           counter=0
@@ -44,7 +44,6 @@ jobs:
           }
 
           directories=(
-            "cypress/e2e"
             "packages/backend/migration"
             "packages/backend/src"
             "packages/backend/test"

.github/workflows/check_copyright_year.yml

@@ -10,7 +10,7 @@ jobs:
   check_copyright_year:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6.0.2
+    - uses: actions/checkout@v6.0.3
     - run: |
         if [ "$(grep Copyright COPYING | sed -e 's/.*2014-\([0-9]*\) .*/\1/g')" -ne "$(date +%Y)" ]; then
           echo "Please change copyright year!"

.github/workflows/deploy-test-environment.yml

@@ -27,9 +27,6 @@ jobs:
       pr-ref: ${{ steps.get-ref.outputs.pr-ref }}
       wait_time: ${{ steps.get-wait-time.outputs.wait_time }}
     steps:
-      - name: Checkout
-        uses: actions/checkout@v6.0.2
-
       - name: Check allowed users
         id: check-allowed-users
         env:

.github/workflows/docker-develop.yml

@@ -27,7 +27,7 @@ jobs:
           platform=${{ matrix.platform }}
           echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
       - name: Check out the repo
-        uses: actions/checkout@v6.0.2
+        uses: actions/checkout@v6.0.3
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v4
       - name: Log in to Docker Hub

.github/workflows/docker.yml

@@ -32,7 +32,7 @@ jobs:
           platform=${{ matrix.platform }}
           echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
       - name: Check out the repo
-        uses: actions/checkout@v6.0.2
+        uses: actions/checkout@v6.0.3
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v4
       - name: Docker meta

.github/workflows/dockle.yml

@@ -17,7 +17,7 @@ jobs:
       DOCKLE_VERSION: 0.4.15
 
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
 
       - name: Download and install dockle v${{ env.DOCKLE_VERSION }}
         run: |

.github/workflows/frontend-browser-diagnostics.comment.yml

@@ -0,0 +1,44 @@
+name: Frontend browser diagnostics (comment)
+
+on:
+  workflow_run:
+    workflows:
+      - Frontend browser diagnostics (inspect)
+    types:
+      - completed
+
+permissions:
+  actions: read
+  contents: read
+  issues: write
+  pull-requests: write
+
+jobs:
+  comment:
+    name: Comment frontend browser diagnostics report
+    if: github.event.workflow_run.event == 'pull_request' && github.event.workflow_run.conclusion == 'success'
+    runs-on: ubuntu-latest
+    concurrency:
+      group: frontend-browser-diagnostics-report-${{ github.event.workflow_run.id }}
+      cancel-in-progress: true
+    steps:
+      - name: Download browser metrics report
+        uses: actions/download-artifact@v8
+        with:
+          name: frontend-browser-diagnostics
+          path: ${{ runner.temp }}/frontend-browser-diagnostics
+          github-token: ${{ github.token }}
+          repository: ${{ github.repository }}
+          run-id: ${{ github.event.workflow_run.id }}
+
+      - name: Load PR number
+        id: load-pr-number
+        shell: bash
+        run: echo "pr-number=$(cat "$RUNNER_TEMP/frontend-browser-diagnostics/pr-number.txt")" >> "$GITHUB_OUTPUT"
+
+      - name: Comment on pull request
+        uses: thollander/actions-comment-pull-request@v3
+        with:
+          pr-number: ${{ steps.load-pr-number.outputs.pr-number }}
+          comment-tag: frontend-browser-diagnostics
+          file-path: ${{ runner.temp }}/frontend-browser-diagnostics/frontend-browser-diagnostics.md

.github/workflows/frontend-browser-diagnostics.inspect.yml

@@ -0,0 +1,210 @@
+name: Frontend browser diagnostics (inspect)
+
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+      - ready_for_review
+    paths:
+      - packages/frontend/**
+      - packages/frontend-shared/**
+      - packages/frontend-builder/**
+      - packages/backend/**
+      - packages/i18n/**
+      - packages/icons-subsetter/**
+      - packages/misskey-js/**
+      - packages/misskey-reversi/**
+      - packages/misskey-bubble-game/**
+      - package.json
+      - pnpm-lock.yaml
+      - pnpm-workspace.yaml
+      - .node-version
+      - .github/misskey/test.yml
+      - .github/scripts/utility.mts
+      - .github/scripts/heap-snapshot-util.mts
+      - .github/scripts/chrome.mts
+      - .github/scripts/frontend-browser-diagnostics.render-additional-html.mts
+      - .github/scripts/frontend-browser-diagnostics.render-md.mts
+      - .github/scripts/frontend-browser-diagnostics.inspect.mts
+      - .github/workflows/frontend-browser-diagnostics.inspect.yml
+      - .github/workflows/frontend-browser-diagnostics.comment.yml
+
+permissions:
+  contents: read
+  pull-requests: read
+
+concurrency:
+  group: frontend-browser-diagnostics-inspect-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
+jobs:
+  report:
+    name: Measure frontend browser metrics
+    runs-on: ubuntu-latest
+    timeout-minutes: 90
+
+    services:
+      postgres:
+        image: postgres:18
+        ports:
+          - 54312:5432
+        env:
+          POSTGRES_DB: test-misskey
+          POSTGRES_HOST_AUTH_METHOD: trust
+      redis:
+        image: redis:8
+        ports:
+          - 56312:6379
+
+    steps:
+      - name: Checkout base
+        uses: actions/checkout@v6.0.3
+        with:
+          persist-credentials: false
+          repository: ${{ github.event.pull_request.base.repo.full_name }}
+          ref: ${{ github.event.pull_request.base.sha }}
+          path: before
+          submodules: true
+
+      - name: Checkout pull request
+        uses: actions/checkout@v6.0.3
+        with:
+          persist-credentials: false
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
+          ref: ${{ github.event.pull_request.head.sha }}
+          path: after
+          submodules: true
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v6.0.9
+        with:
+          package_json_file: after/package.json
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v6.4.0
+        with:
+          node-version-file: after/.node-version
+          cache: pnpm
+          cache-dependency-path: |
+            before/pnpm-lock.yaml
+            after/pnpm-lock.yaml
+
+      - name: Install dependencies for base
+        working-directory: before
+        run: pnpm i --frozen-lockfile
+
+      - name: Configure base
+        working-directory: before
+        run: cp .github/misskey/test.yml .config
+
+      - name: Build base
+        working-directory: before
+        run: pnpm build
+
+      - name: Install dependencies for pull request
+        working-directory: after
+        run: pnpm i --frozen-lockfile
+
+      - name: Configure pull request
+        working-directory: after
+        run: cp .github/misskey/test.yml .config
+
+      - name: Build pull request
+        working-directory: after
+        run: pnpm build
+
+      - name: Install Playwright browsers
+        working-directory: after/packages/frontend
+        run: pnpm exec playwright install --with-deps --no-shell chromium
+
+      - name: Measure frontend browser metrics
+        shell: bash
+        env:
+          FRONTEND_BROWSER_METRICS_SAMPLE_COUNT: 5
+          MK_ENABLE_CROSS_ORIGIN_ISOLATION: "true"
+        run: |
+          REPORT_DIR="$RUNNER_TEMP/frontend-browser-diagnostics"
+          mkdir -p "$REPORT_DIR"
+          node after/.github/scripts/frontend-browser-diagnostics.inspect.mts before after "$REPORT_DIR/before-browser.json" "$REPORT_DIR/after-browser.json"
+
+      - name: Upload browser base heap snapshot
+        id: upload-browser-base-heap-snapshot
+        uses: actions/upload-artifact@v7
+        with:
+          path: base-heap-snapshot.heapsnapshot
+          archive: false
+          if-no-files-found: error
+          retention-days: 7
+
+      - name: Upload browser head heap snapshot
+        id: upload-browser-head-heap-snapshot
+        uses: actions/upload-artifact@v7
+        with:
+          path: head-heap-snapshot.heapsnapshot
+          archive: false
+          if-no-files-found: error
+          retention-days: 7
+
+      - name: Generate browser detailed html
+        shell: bash
+        run: |
+          REPORT_DIR="$RUNNER_TEMP/frontend-browser-diagnostics"
+          test -s "$REPORT_DIR/before-browser.json"
+          test -s "$REPORT_DIR/after-browser.json"
+          node after/.github/scripts/frontend-browser-diagnostics.render-additional-html.mts "$REPORT_DIR/before-browser.json" "$REPORT_DIR/after-browser.json" "$REPORT_DIR/frontend-browser-detailed-html.html"
+
+      - name: Upload browser detailed html
+        id: upload-browser-detailed-html
+        uses: actions/upload-artifact@v7
+        with:
+          name: frontend-browser-metrics-detailed-html
+          path: ${{ runner.temp }}/frontend-browser-diagnostics/frontend-browser-detailed-html.html
+          if-no-files-found: error
+          archive: false
+          retention-days: 7
+
+      - name: Generate browser metrics report
+        shell: bash
+        env:
+          BASE_SHA: ${{ github.event.pull_request.base.sha }}
+          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+          PR_NUMBER: ${{ github.event.pull_request.number }}
+          FRONTEND_BROWSER_BASE_HEAP_SNAPSHOT_ARTIFACT_URL: ${{ steps.upload-browser-base-heap-snapshot.outputs.artifact-url }}
+          FRONTEND_BROWSER_HEAD_HEAP_SNAPSHOT_ARTIFACT_URL: ${{ steps.upload-browser-head-heap-snapshot.outputs.artifact-url }}
+          FRONTEND_BROWSER_DETAILED_HTML_ARTIFACT_URL: ${{ steps.upload-browser-detailed-html.outputs.artifact-url }}
+        run: |
+          REPORT_DIR="$RUNNER_TEMP/frontend-browser-diagnostics"
+          test -s "$REPORT_DIR/before-browser.json"
+          test -s "$REPORT_DIR/after-browser.json"
+          node after/.github/scripts/frontend-browser-diagnostics.render-md.mts "$REPORT_DIR/before-browser.json" "$REPORT_DIR/after-browser.json" "$REPORT_DIR/frontend-browser-diagnostics.md"
+          printf '%s\n' "$PR_NUMBER" > "$REPORT_DIR/pr-number.txt"
+          printf '%s\n' "$BASE_SHA" > "$REPORT_DIR/base-sha.txt"
+          printf '%s\n' "$HEAD_SHA" > "$REPORT_DIR/head-sha.txt"
+          printf '%s\n' "${{ github.event.pull_request.html_url }}" > "$REPORT_DIR/pr-url.txt"
+
+      - name: Check browser metrics report
+        shell: bash
+        run: |
+          REPORT_DIR="$RUNNER_TEMP/frontend-browser-diagnostics"
+          test -s "$REPORT_DIR/frontend-browser-diagnostics.md"
+          test -s "$REPORT_DIR/frontend-browser-detailed-html.html"
+          test -s "$REPORT_DIR/pr-number.txt"
+          test -s "$REPORT_DIR/head-sha.txt"
+          cat "$REPORT_DIR/frontend-browser-diagnostics.md" >> "$GITHUB_STEP_SUMMARY"
+
+      - name: Upload browser metrics report
+        uses: actions/upload-artifact@v7
+        with:
+          name: frontend-browser-diagnostics
+          path: |
+            ${{ runner.temp }}/frontend-browser-diagnostics/before-browser.json
+            ${{ runner.temp }}/frontend-browser-diagnostics/after-browser.json
+            ${{ runner.temp }}/frontend-browser-diagnostics/frontend-browser-diagnostics.md
+            ${{ runner.temp }}/frontend-browser-diagnostics/pr-number.txt
+            ${{ runner.temp }}/frontend-browser-diagnostics/base-sha.txt
+            ${{ runner.temp }}/frontend-browser-diagnostics/head-sha.txt
+            ${{ runner.temp }}/frontend-browser-diagnostics/pr-url.txt
+          if-no-files-found: error
+          retention-days: 7

.github/workflows/frontend-bundle-diagnostics.comment.yml

@@ -0,0 +1,44 @@
+name: Frontend bundle diagnostics (comment)
+
+on:
+  workflow_run:
+    workflows:
+      - Frontend bundle diagnostics (inspect)
+    types:
+      - completed
+
+permissions:
+  actions: read
+  contents: read
+  issues: write
+  pull-requests: write
+
+jobs:
+  comment:
+    name: Comment frontend bundle report
+    if: github.event.workflow_run.event == 'pull_request' && github.event.workflow_run.conclusion == 'success'
+    runs-on: ubuntu-latest
+    concurrency:
+      group: frontend-bundle-diagnostics-report-${{ github.event.workflow_run.id }}
+      cancel-in-progress: true
+    steps:
+      - name: Download bundle report
+        uses: actions/download-artifact@v8
+        with:
+          name: frontend-bundle-report
+          path: ${{ runner.temp }}/frontend-bundle-report
+          github-token: ${{ github.token }}
+          repository: ${{ github.repository }}
+          run-id: ${{ github.event.workflow_run.id }}
+
+      - name: Load PR number
+        id: load-pr-number
+        shell: bash
+        run: echo "pr-number=$(cat "$RUNNER_TEMP/frontend-bundle-report/pr-number.txt")" >> "$GITHUB_OUTPUT"
+
+      - name: Comment on pull request
+        uses: thollander/actions-comment-pull-request@v3
+        with:
+          pr-number: ${{ steps.load-pr-number.outputs.pr-number }}
+          comment-tag: frontend-bundle-diagnostics
+          file-path: ${{ runner.temp }}/frontend-bundle-report/frontend-bundle-diagnostics-report.md

.github/workflows/frontend-bundle-diagnostics.inspect.yml

@@ -0,0 +1,144 @@
+name: Frontend bundle diagnostics (inspect)
+
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+      - ready_for_review
+    paths:
+      - packages/frontend/**
+      - packages/frontend-shared/**
+      - packages/frontend-builder/**
+      - packages/i18n/**
+      - packages/icons-subsetter/**
+      - packages/misskey-js/**
+      - packages/misskey-reversi/**
+      - packages/misskey-bubble-game/**
+      - package.json
+      - pnpm-lock.yaml
+      - pnpm-workspace.yaml
+      - .node-version
+      - .github/scripts/utility.mts
+      - .github/scripts/frontend-bundle-diagnostics.render-md.mts
+      - .github/workflows/frontend-bundle-diagnostics.inspect.yml
+      - .github/workflows/frontend-bundle-diagnostics.comment.yml
+
+permissions:
+  contents: read
+  pull-requests: read
+
+concurrency:
+  group: frontend-bundle-diagnostics-inspect-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
+jobs:
+  report:
+    name: Build frontend bundle report
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout base
+        uses: actions/checkout@v6.0.3
+        with:
+          repository: ${{ github.event.pull_request.base.repo.full_name }}
+          ref: ${{ github.event.pull_request.base.sha }}
+          path: before
+          submodules: true
+
+      - name: Checkout pull request
+        uses: actions/checkout@v6.0.3
+        with:
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
+          ref: ${{ github.event.pull_request.head.sha }}
+          path: after
+          submodules: true
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v6.0.9
+        with:
+          package_json_file: after/package.json
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v6.4.0
+        with:
+          node-version-file: after/.node-version
+          cache: pnpm
+          cache-dependency-path: |
+            before/pnpm-lock.yaml
+            after/pnpm-lock.yaml
+
+      - name: Install dependencies for base
+        working-directory: before
+        run: pnpm i --frozen-lockfile
+
+      - name: Build frontend dependencies for base
+        working-directory: before
+        run: pnpm --filter "frontend^..." run build
+
+      - name: Prepare report output
+        run: mkdir -p "$RUNNER_TEMP/frontend-bundle-report"
+
+      - name: Build frontend report for base
+        working-directory: before
+        env:
+          FRONTEND_BUNDLE_VISUALIZER: 'true'
+          FRONTEND_BUNDLE_VISUALIZER_FILE: ${{ runner.temp }}/frontend-bundle-report/before-stats.json
+        run: pnpm --filter frontend run build
+
+      - name: Install dependencies for pull request
+        working-directory: after
+        run: pnpm i --frozen-lockfile
+
+      - name: Build frontend dependencies for pull request
+        working-directory: after
+        run: pnpm --filter "frontend^..." run build
+
+      - name: Build frontend report for pull request
+        working-directory: after
+        env:
+          FRONTEND_BUNDLE_VISUALIZER: 'true'
+          FRONTEND_BUNDLE_VISUALIZER_FILE: ${{ runner.temp }}/frontend-bundle-report/after-stats.json
+          FRONTEND_BUNDLE_VISUALIZER_HTML_FILE: ${{ runner.temp }}/frontend-bundle-report/frontend-bundle-visualizer.html
+        run: pnpm --filter frontend run build
+
+      - name: Upload bundle visualizer
+        id: upload-bundle-visualizer
+        uses: actions/upload-artifact@v7
+        with:
+          name: frontend-bundle-visualizer
+          path: ${{ runner.temp }}/frontend-bundle-report/frontend-bundle-visualizer.html
+          if-no-files-found: error
+          archive: false
+          retention-days: 7
+
+      - name: Generate report markdown
+        shell: bash
+        env:
+          BASE_SHA: ${{ github.event.pull_request.base.sha }}
+          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+          PR_NUMBER: ${{ github.event.pull_request.number }}
+          FRONTEND_BUNDLE_REPORT_ARTIFACT_URL: ${{ steps.upload-bundle-visualizer.outputs.artifact-url }}
+        run: |
+          REPORT_DIR="$RUNNER_TEMP/frontend-bundle-report"
+          node after/.github/scripts/frontend-bundle-diagnostics.render-md.mts before after "$REPORT_DIR/before-stats.json" "$REPORT_DIR/after-stats.json" "$REPORT_DIR/frontend-bundle-diagnostics-report.md"
+          printf '%s\n' "$PR_NUMBER" > "$REPORT_DIR/pr-number.txt"
+          printf '%s\n' "$BASE_SHA" > "$REPORT_DIR/base-sha.txt"
+          printf '%s\n' "$HEAD_SHA" > "$REPORT_DIR/head-sha.txt"
+          printf '%s\n' "${{ github.event.pull_request.html_url }}" > "$REPORT_DIR/pr-url.txt"
+
+      - name: Check report
+        run: |
+          REPORT_DIR="$RUNNER_TEMP/frontend-bundle-report"
+          test -s "$REPORT_DIR/before-stats.json"
+          test -s "$REPORT_DIR/after-stats.json"
+          test -s "$REPORT_DIR/frontend-bundle-diagnostics-report.md"
+          cat "$REPORT_DIR/frontend-bundle-diagnostics-report.md" >> "$GITHUB_STEP_SUMMARY"
+
+      - name: Upload bundle report
+        uses: actions/upload-artifact@v7
+        with:
+          name: frontend-bundle-report
+          path: ${{ runner.temp }}/frontend-bundle-report/
+          if-no-files-found: error
+          retention-days: 7

.github/workflows/get-api-diff.yml

@@ -25,12 +25,12 @@ jobs:
             ref: refs/pull/${{ github.event.number }}/merge
 
     steps:
-    - uses: actions/checkout@v6.0.2
+    - uses: actions/checkout@v6.0.3
       with:
         ref: ${{ matrix.ref }}
         submodules: true
     - name: Setup pnpm
-      uses: pnpm/action-setup@v6.0.3
+      uses: pnpm/action-setup@v6.0.9
     - name: Use Node.js
       uses: actions/setup-node@v6.4.0
       with:

.github/workflows/get-backend-memory.yml

@@ -1,87 +0,0 @@
-# this name is used in report-backend-memory.yml so be careful when change name
-name: Get backend memory usage
-
-on:
-  pull_request:
-    branches:
-      - master
-      - develop
-    paths:
-      - packages/backend/**
-      - packages/misskey-js/**
-      - .github/workflows/get-backend-memory.yml
-
-jobs:
-  get-memory-usage:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-
-    strategy:
-      matrix:
-        memory-json-name: [memory-base.json, memory-head.json]
-        include:
-          - memory-json-name: memory-base.json
-            ref: ${{ github.base_ref }}
-          - memory-json-name: memory-head.json
-            ref: refs/pull/${{ github.event.number }}/merge
-
-    services:
-      postgres:
-        image: postgres:18
-        ports:
-          - 54312:5432
-        env:
-          POSTGRES_DB: test-misskey
-          POSTGRES_HOST_AUTH_METHOD: trust
-      redis:
-        image: redis:8
-        ports:
-          - 56312:6379
-
-    steps:
-    - uses: actions/checkout@v6.0.2
-      with:
-        ref: ${{ matrix.ref }}
-        submodules: true
-    - name: Setup pnpm
-      uses: pnpm/action-setup@v6.0.3
-    - name: Use Node.js
-      uses: actions/setup-node@v6.4.0
-      with:
-        node-version-file: '.node-version'
-        cache: 'pnpm'
-    - run: pnpm i --frozen-lockfile
-    - name: Check pnpm-lock.yaml
-      run: git diff --exit-code pnpm-lock.yaml
-    - name: Copy Configure
-      run: cp .github/misskey/test.yml .config/default.yml
-    - name: Compile Configure
-      run: pnpm compile-config
-    - name: Build
-      run: pnpm build
-    - name: Run migrations
-      run: pnpm --filter backend migrate
-    - name: Measure memory usage
-      run: |
-        # Start the server and measure memory usage
-        node packages/backend/scripts/measure-memory.mjs > ${{ matrix.memory-json-name }}
-    - name: Upload Artifact
-      uses: actions/upload-artifact@v7
-      with:
-        name: memory-artifact-${{ matrix.memory-json-name }}
-        path: ${{ matrix.memory-json-name }}
-
-  save-pr-number:
-    runs-on: ubuntu-latest
-    permissions: {}
-    steps:
-      - name: Save PR number
-        env:
-          PR_NUMBER: ${{ github.event.number }}
-        run: |
-          echo "$PR_NUMBER" > ./pr_number
-      - uses: actions/upload-artifact@v7
-        with:
-          name: memory-artifact-pr-number
-          path: pr_number

.github/workflows/lint.yml

@@ -17,7 +17,9 @@ on:
       - packages/misskey-bubble-game/**
       - packages/misskey-reversi/**
       - packages/shared/eslint.config.js
+      - scripts/check-dts*.mjs
       - .github/workflows/lint.yml
+      - package.json
   pull_request:
     paths:
       - packages/backend/**
@@ -31,17 +33,19 @@ on:
       - packages/misskey-bubble-game/**
       - packages/misskey-reversi/**
       - packages/shared/eslint.config.js
+      - scripts/check-dts*.mjs
       - .github/workflows/lint.yml
+      - package.json
 jobs:
   pnpm_install:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6.0.2
+    - uses: actions/checkout@v6.0.3
       with:
         fetch-depth: 0
         submodules: true
     - name: Setup pnpm
-      uses: pnpm/action-setup@v6.0.3
+      uses: pnpm/action-setup@v6.0.9
     - uses: actions/setup-node@v6.4.0
       with:
         node-version-file: '.node-version'
@@ -69,12 +73,12 @@ jobs:
       eslint-cache-version: v1
       eslint-cache-path: ${{ github.workspace }}/node_modules/.cache/eslint-${{ matrix.workspace }}
     steps:
-    - uses: actions/checkout@v6.0.2
+    - uses: actions/checkout@v6.0.3
       with:
         fetch-depth: 0
         submodules: true
     - name: Setup pnpm
-      uses: pnpm/action-setup@v6.0.3
+      uses: pnpm/action-setup@v6.0.9
     - uses: actions/setup-node@v6.4.0
       with:
         node-version-file: '.node-version'
@@ -100,12 +104,12 @@ jobs:
         - sw
         - misskey-js
     steps:
-    - uses: actions/checkout@v6.0.2
+    - uses: actions/checkout@v6.0.3
       with:
         fetch-depth: 0
         submodules: true
     - name: Setup pnpm
-      uses: pnpm/action-setup@v6.0.3
+      uses: pnpm/action-setup@v6.0.9
     - uses: actions/setup-node@v6.4.0
       with:
         node-version-file: '.node-version'
@@ -113,3 +117,22 @@ jobs:
     - run: pnpm i --frozen-lockfile
     - run: pnpm --filter "${{ matrix.workspace }}^..." run build
     - run: pnpm --filter ${{ matrix.workspace }} run typecheck
+
+  check-dts:
+    needs: [pnpm_install]
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    steps:
+    - uses: actions/checkout@v6.0.3
+      with:
+        fetch-depth: 0
+        submodules: true
+    - name: Setup pnpm
+      uses: pnpm/action-setup@v6.0.9
+    - uses: actions/setup-node@v6.4.0
+      with:
+        node-version-file: '.node-version'
+        cache: 'pnpm'
+    - run: pnpm i --frozen-lockfile
+    - run: node --test scripts/check-dts.test.mjs
+    - run: pnpm check-dts

.github/workflows/locale.yml

@@ -1,4 +1,4 @@
-name: Lint
+name: Locale
 
 on:
   push:
@@ -16,12 +16,12 @@ jobs:
     runs-on: ubuntu-latest
     continue-on-error: true
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
         with:
           fetch-depth: 0
           submodules: true
       - name: Setup pnpm
-        uses: pnpm/action-setup@v6.0.3
+        uses: pnpm/action-setup@v6.0.9
       - uses: actions/setup-node@v6.4.0
         with:
           node-version-file: ".node-version"

.github/workflows/on-release-created.yml

@@ -16,11 +16,11 @@ jobs:
       id-token: write
 
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
         with:
           submodules: true
       - name: Setup pnpm
-        uses: pnpm/action-setup@v6.0.3
+        uses: pnpm/action-setup@v6.0.9
       - name: Use Node.js
         uses: actions/setup-node@v6.4.0
         with:

.github/workflows/report-api-diff.yml

@@ -11,44 +11,26 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ github.event.workflow_run.conclusion == 'success' }}
     permissions:
+      actions: read
       pull-requests: write
 
 # api-artifact
     steps:
-      - name: Download artifact
-        uses: actions/github-script@v9
+      - name: Download artifacts
+        uses: actions/download-artifact@v8
         with:
-          script: |
-            const fs = require('fs');
-            let allArtifacts = await github.rest.actions.listWorkflowRunArtifacts({
-               owner: context.repo.owner,
-               repo: context.repo.repo,
-               run_id: context.payload.workflow_run.id,
-            });
-            let matchArtifacts = allArtifacts.data.artifacts.filter((artifact) => {
-              return artifact.name.startsWith("api-artifact-") || artifact.name == "api-artifact"
-            });
-            await Promise.all(matchArtifacts.map(async (artifact) => {
-              let download = await github.rest.actions.downloadArtifact({
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                artifact_id: artifact.id,
-                archive_format: 'zip',
-              });
-              await fs.promises.writeFile(`${process.env.GITHUB_WORKSPACE}/${artifact.name}.zip`, Buffer.from(download.data));
-            }));
-      - name: Extract all artifacts
-        run: |
-          find . -mindepth 1 -maxdepth 1 -type f -name '*.zip' -exec unzip {} -d artifacts ';'
-          ls -la
+          pattern: api-artifact-*
+          path: artifacts
+          merge-multiple: true
+          github-token: ${{ github.token }}
+          repository: ${{ github.repository }}
+          run-id: ${{ github.event.workflow_run.id }}
+      - name: Check artifacts
+        run: ls -lh artifacts/
       - name: Load PR Number
         id: load-pr-num
         run: echo "pr-number=$(cat artifacts/pr_number)" >> "$GITHUB_OUTPUT"
 
-      - name: Output base
-        run: cat ./artifacts/api-base.json
-      - name: Output head
-        run: cat ./artifacts/api-head.json
       - name: Arrange json files
         run: |
           jq '.' ./artifacts/api-base.json > ./api-base.json
@@ -57,8 +39,6 @@ jobs:
         run: diff -u --label=base --label=head ./api-base.json ./api-head.json | cat > api.json.diff
       - name: Get full diff
         run: diff --label=base --label=head --new-line-format='+%L' --old-line-format='-%L' --unchanged-line-format=' %L' ./api-base.json ./api-head.json | cat > api-full.json.diff
-      - name: Echo full diff
-        run: cat ./api-full.json.diff
       - name: Upload full diff to Artifact
         uses: actions/upload-artifact@v7
         with:

.github/workflows/report-backend-memory.yml

@@ -1,177 +0,0 @@
-name: Report backend memory
-
-on:
-  workflow_run:
-    types: [completed]
-    workflows:
-      - Get backend memory usage # get-backend-memory.yml
-
-jobs:
-  compare-memory:
-    runs-on: ubuntu-latest
-    if: ${{ github.event.workflow_run.conclusion == 'success' }}
-    permissions:
-      pull-requests: write
-
-    steps:
-      - name: Download artifact
-        uses: actions/github-script@v9
-        with:
-          script: |
-            const fs = require('fs');
-            let allArtifacts = await github.rest.actions.listWorkflowRunArtifacts({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              run_id: context.payload.workflow_run.id,
-            });
-            let matchArtifacts = allArtifacts.data.artifacts.filter((artifact) => {
-              return artifact.name.startsWith("memory-artifact-") || artifact.name == "memory-artifact"
-            });
-            await Promise.all(matchArtifacts.map(async (artifact) => {
-              let download = await github.rest.actions.downloadArtifact({
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                artifact_id: artifact.id,
-                archive_format: 'zip',
-              });
-              await fs.promises.writeFile(`${process.env.GITHUB_WORKSPACE}/${artifact.name}.zip`, Buffer.from(download.data));
-            }));
-      - name: Extract all artifacts
-        run: |
-          find . -mindepth 1 -maxdepth 1 -type f -name '*.zip' -exec unzip {} -d artifacts ';'
-          ls -la artifacts/
-      - name: Load PR Number
-        id: load-pr-num
-        run: echo "pr-number=$(cat artifacts/pr_number)" >> "$GITHUB_OUTPUT"
-
-      - name: Output base
-        run: cat ./artifacts/memory-base.json
-      - name: Output head
-        run: cat ./artifacts/memory-head.json
-      - name: Compare memory usage
-        id: compare
-        run: |
-          BASE_MEMORY=$(cat ./artifacts/memory-base.json)
-          HEAD_MEMORY=$(cat ./artifacts/memory-head.json)
-
-          variation() {
-            calc() {
-              BASE=$(echo "$BASE_MEMORY" | jq -r ".${1}.${2} // 0")
-              HEAD=$(echo "$HEAD_MEMORY" | jq -r ".${1}.${2} // 0")
-
-              DIFF=$((HEAD - BASE))
-              if [ "$BASE" -gt 0 ]; then
-                DIFF_PERCENT=$(echo "scale=2; ($DIFF * 100) / $BASE" | bc)
-              else
-                DIFF_PERCENT=0
-              fi
-
-              # Convert KB to MB for readability
-              BASE_MB=$(echo "scale=2; $BASE / 1024" | bc)
-              HEAD_MB=$(echo "scale=2; $HEAD / 1024" | bc)
-              DIFF_MB=$(echo "scale=2; $DIFF / 1024" | bc)
-
-              JSON=$(jq -c -n \
-                --argjson base "$BASE_MB" \
-                --argjson head "$HEAD_MB" \
-                --argjson diff "$DIFF_MB" \
-                --argjson diff_percent "$DIFF_PERCENT" \
-                '{base: $base, head: $head, diff: $diff, diff_percent: $diff_percent}')
-
-              echo "$JSON"
-            }
-
-            JSON=$(jq -c -n \
-              --argjson VmRSS "$(calc $1 VmRSS)" \
-              --argjson VmHWM "$(calc $1 VmHWM)" \
-              --argjson VmSize "$(calc $1 VmSize)" \
-              --argjson VmData "$(calc $1 VmData)" \
-              '{VmRSS: $VmRSS, VmHWM: $VmHWM, VmSize: $VmSize, VmData: $VmData}')
-
-            echo "$JSON"
-          }
-
-          JSON=$(jq -c -n \
-            --argjson beforeGc "$(variation beforeGc)" \
-            --argjson afterGc "$(variation afterGc)" \
-            --argjson afterRequest "$(variation afterRequest)" \
-            '{beforeGc: $beforeGc, afterGc: $afterGc, afterRequest: $afterRequest}')
-
-          echo "res=$JSON" >> "$GITHUB_OUTPUT"
-      - id: build-comment
-        name: Build memory comment
-        env:
-          RES: ${{ steps.compare.outputs.res }}
-        run: |
-          HEADER="## Backend memory usage comparison"
-          FOOTER="[See workflow logs for details](https://github.com/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID})"
-
-          echo "$HEADER" > ./output.md
-          echo >> ./output.md
-
-          table() {
-            echo "| Metric | base (MB) | head (MB) | Diff (MB) | Diff (%) |" >> ./output.md
-            echo "|--------|------:|------:|------:|------:|" >> ./output.md
-
-            line() {
-              METRIC=$2
-              BASE=$(echo "$RES" | jq -r ".${1}.${2}.base")
-              HEAD=$(echo "$RES" | jq -r ".${1}.${2}.head")
-              DIFF=$(echo "$RES" | jq -r ".${1}.${2}.diff")
-              DIFF_PERCENT=$(echo "$RES" | jq -r ".${1}.${2}.diff_percent")
-
-              if (( $(echo "$DIFF_PERCENT > 0" | bc -l) )); then
-                DIFF="+$DIFF"
-                DIFF_PERCENT="+$DIFF_PERCENT"
-              fi
-
-              # highlight VmRSS
-              if [ "$2" = "VmRSS" ]; then
-                METRIC="**${METRIC}**"
-                BASE="**${BASE}**"
-                HEAD="**${HEAD}**"
-                DIFF="**${DIFF}**"
-                DIFF_PERCENT="**${DIFF_PERCENT}**"
-              fi
-
-              echo "| ${METRIC} | ${BASE} MB | ${HEAD} MB | ${DIFF} MB | ${DIFF_PERCENT}% |" >> ./output.md
-            }
-
-            line $1 VmRSS
-            line $1 VmHWM
-            line $1 VmSize
-            line $1 VmData
-          }
-
-          echo "### Before GC" >> ./output.md
-          table beforeGc
-          echo >> ./output.md
-
-          echo "### After GC" >> ./output.md
-          table afterGc
-          echo >> ./output.md
-
-          echo "### After Request" >> ./output.md
-          table afterRequest
-          echo >> ./output.md
-
-          # Determine if this is a significant change (more than 5% increase)
-          if [ "$(echo "$RES" | jq -r '.afterGc.VmRSS.diff_percent | tonumber > 5')" = "true" ]; then
-            echo "⚠️ **Warning**: Memory usage has increased by more than 5%. Please verify this is not an unintended change." >> ./output.md
-            echo >> ./output.md
-          fi
-
-          echo "$FOOTER" >> ./output.md
-      - uses: thollander/actions-comment-pull-request@v3
-        with:
-          pr-number: ${{ steps.load-pr-num.outputs.pr-number }}
-          comment-tag: show_memory_diff
-          file-path: ./output.md
-      - name: Tell error to PR
-        uses: thollander/actions-comment-pull-request@v3
-        if: failure() && steps.load-pr-num.outputs.pr-number
-        with:
-          pr-number: ${{ steps.load-pr-num.outputs.pr-number }}
-          comment-tag: show_memory_diff_error
-          message: |
-            An error occurred while comparing backend memory usage. See [workflow logs](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}) for details.

.github/workflows/storybook.yml

@@ -22,12 +22,12 @@ jobs:
       NODE_OPTIONS: "--max_old_space_size=7168"
 
     steps:
-    - uses: actions/checkout@v6.0.2
+    - uses: actions/checkout@v6.0.3
       if: github.event_name != 'pull_request_target'
       with:
         fetch-depth: 0
         submodules: true
-    - uses: actions/checkout@v6.0.2
+    - uses: actions/checkout@v6.0.3
       if: github.event_name == 'pull_request_target'
       with:
         fetch-depth: 0
@@ -37,7 +37,7 @@ jobs:
       if: github.event_name == 'pull_request_target'
       run: git checkout "$(git rev-list --parents -n1 HEAD | cut -d" " -f3)"
     - name: Setup pnpm
-      uses: pnpm/action-setup@v6.0.3
+      uses: pnpm/action-setup@v6.0.9
     - name: Use Node.js
       uses: actions/setup-node@v6.4.0
       with:

.github/workflows/test-backend.yml

@@ -19,12 +19,6 @@ on:
       - .github/workflows/test-backend.yml
       - .github/misskey/test.yml
   workflow_dispatch:
-    inputs:
-      force_ffmpeg_cache_update:
-        description: 'Force update ffmpeg cache'
-        required: false
-        default: false
-        type: boolean
 
 jobs:
   unit:
@@ -49,7 +43,7 @@ jobs:
         ports:
           - 56312:6379
       meilisearch:
-        image: getmeili/meilisearch:v1.42.1
+        image: getmeili/meilisearch:v1.48.1
         ports:
           - 57712:7700
         env:
@@ -57,41 +51,14 @@ jobs:
           MEILI_ENV: development
 
     steps:
-    - uses: actions/checkout@v6.0.2
+    - uses: actions/checkout@v6.0.3
       with:
         submodules: true
     - name: Setup pnpm
-      uses: pnpm/action-setup@v6.0.3
-    - name: Get current date
-      id: current-date
-      run: echo "today=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT
-    - name: Setup and Restore ffmpeg/ffprobe Cache
-      id: cache-ffmpeg
-      uses: actions/cache@v5
-      with:
-        path: |
-          /usr/local/bin/ffmpeg
-          /usr/local/bin/ffprobe
-        # daily cache
-        key: ${{ runner.os }}-ffmpeg-${{ steps.current-date.outputs.today }}
-        restore-keys: |
-          ${{ runner.os }}-ffmpeg-${{ steps.current-date.outputs.today }}
+      uses: pnpm/action-setup@v6.0.9
     - name: Install FFmpeg
-      if: steps.cache-ffmpeg.outputs.cache-hit != 'true' || github.event.inputs.force_ffmpeg_cache_update == true
       run: |
-        for i in {1..3}; do
-          echo "Attempt $i: Installing FFmpeg..."
-          curl -s -L https://johnvansickle.com/ffmpeg/releases/ffmpeg-release-amd64-static.tar.xz -o ffmpeg.tar.xz && \
-          tar -xf ffmpeg.tar.xz && \
-          mv ffmpeg-*-static/ffmpeg /usr/local/bin/ && \
-          mv ffmpeg-*-static/ffprobe /usr/local/bin/ && \
-          rm -rf ffmpeg.tar.xz ffmpeg-*-static/ && \
-          break || sleep 10
-          if [ $i -eq 3 ]; then
-            echo "Failed to install FFmpeg after 3 attempts"
-            exit 1
-          fi
-        done
+        sudo apt install -y ffmpeg
     - name: Use Node.js
       uses: actions/setup-node@v6.4.0
       with:
@@ -136,11 +103,11 @@ jobs:
           - 56312:6379
 
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
         with:
           submodules: true
       - name: Setup pnpm
-        uses: pnpm/action-setup@v6.0.3
+        uses: pnpm/action-setup@v6.0.9
       - name: Use Node.js
         uses: actions/setup-node@v6.4.0
         with:
@@ -180,11 +147,11 @@ jobs:
           POSTGRES_HOST_AUTH_METHOD: trust
 
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
         with:
           submodules: true
       - name: Setup pnpm
-        uses: pnpm/action-setup@v6.0.3
+        uses: pnpm/action-setup@v6.0.9
       - name: Get current date
         id: current-date
         run: echo "today=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT

.github/workflows/test-federation.yml

@@ -15,12 +15,6 @@ on:
       - packages/misskey-js/**
       - .github/workflows/test-federation.yml
   workflow_dispatch:
-    inputs:
-      force_ffmpeg_cache_update:
-        description: 'Force update ffmpeg cache'
-        required: false
-        default: false
-        type: boolean
 
 jobs:
   test:
@@ -36,37 +30,10 @@ jobs:
         with:
           submodules: true
       - name: Setup pnpm
-        uses: pnpm/action-setup@v6.0.3
-      - name: Get current date
-        id: current-date
-        run: echo "today=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT
-      - name: Setup and Restore ffmpeg/ffprobe Cache
-        id: cache-ffmpeg
-        uses: actions/cache@v5
-        with:
-          path: |
-            /usr/local/bin/ffmpeg
-            /usr/local/bin/ffprobe
-          # daily cache
-          key: ${{ runner.os }}-ffmpeg-${{ steps.current-date.outputs.today }}
-          restore-keys: |
-            ${{ runner.os }}-ffmpeg-${{ steps.current-date.outputs.today }}
+        uses: pnpm/action-setup@v6.0.9
       - name: Install FFmpeg
-        if: steps.cache-ffmpeg.outputs.cache-hit != 'true' || github.event.inputs.force_ffmpeg_cache_update == true
         run: |
-          for i in {1..3}; do
-            echo "Attempt $i: Installing FFmpeg..."
-            curl -s -L https://johnvansickle.com/ffmpeg/releases/ffmpeg-release-amd64-static.tar.xz -o ffmpeg.tar.xz && \
-            tar -xf ffmpeg.tar.xz && \
-            mv ffmpeg-*-static/ffmpeg /usr/local/bin/ && \
-            mv ffmpeg-*-static/ffprobe /usr/local/bin/ && \
-            rm -rf ffmpeg.tar.xz ffmpeg-*-static/ && \
-            break || sleep 10
-            if [ $i -eq 3 ]; then
-              echo "Failed to install FFmpeg after 3 attempts"
-              exit 1
-            fi
-          done
+          sudo apt install -y ffmpeg
       - name: Use Node.js
         uses: actions/setup-node@v6.4.0
         with:

.github/workflows/test-frontend.yml

@@ -28,11 +28,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v6.0.2
+    - uses: actions/checkout@v6.0.3
       with:
         submodules: true
     - name: Setup pnpm
-      uses: pnpm/action-setup@v6.0.3
+      uses: pnpm/action-setup@v6.0.9
     - name: Use Node.js
       uses: actions/setup-node@v6.4.0
       with:
@@ -57,11 +57,6 @@ jobs:
     name: E2E tests (frontend)
     runs-on: ubuntu-latest
 
-    strategy:
-      fail-fast: false
-      matrix:
-        browser: [chrome]
-
     services:
       postgres:
         image: postgres:18
@@ -76,17 +71,11 @@ jobs:
           - 56312:6379
 
     steps:
-    - uses: actions/checkout@v6.0.2
+    - uses: actions/checkout@v6.0.3
       with:
         submodules: true
-    # https://github.com/cypress-io/cypress-docker-images/issues/150
-    #- name: Install mplayer for FireFox
-    #  run: sudo apt install mplayer -y
-    #  if: ${{ matrix.browser == 'firefox' }}
-    #- uses: browser-actions/setup-firefox@latest
-    #  if: ${{ matrix.browser == 'firefox' }}
     - name: Setup pnpm
-      uses: pnpm/action-setup@v6.0.3
+      uses: pnpm/action-setup@v6.0.9
     - name: Use Node.js
       uses: actions/setup-node@v6.4.0
       with:
@@ -97,29 +86,14 @@ jobs:
       run: cp .github/misskey/test.yml .config
     - name: Build
       run: pnpm build
-    # https://github.com/cypress-io/cypress/issues/4351#issuecomment-559489091
-    - name: ALSA Env
-      run: echo -e 'pcm.!default {\n type hw\n card 0\n}\n\nctl.!default {\n type hw\n card 0\n}' > ~/.asoundrc
-    # XXX: This tries reinstalling Cypress if the binary is not cached
-    # Remove this when the cache issue is fixed
-    - name: Cypress install
-      run: pnpm exec cypress install
-    - name: Cypress run
-      uses: cypress-io/github-action@v7.1.9
+    - name: Playwright install
+      working-directory: packages/frontend
+      run: pnpm exec playwright install --with-deps chromium
+    - name: Test
+      run: pnpm start-server-and-test start:test http://localhost:61812 "pnpm --filter frontend test:e2e"
       timeout-minutes: 15
-      with:
-        install: false
-        start: pnpm start:test
-        wait-on: 'http://localhost:61812'
-        headed: true
-        browser: ${{ matrix.browser }}
     - uses: actions/upload-artifact@v7
       if: failure()
       with:
-        name: ${{ matrix.browser }}-cypress-screenshots
-        path: cypress/screenshots
-    - uses: actions/upload-artifact@v7
-      if: always()
-      with:
-        name: ${{ matrix.browser }}-cypress-videos
-        path: cypress/videos
+        name: playwright-e2e-artifacts
+        path: packages/frontend/test/e2e/artifacts

.github/workflows/test-misskey-js.yml

@@ -22,10 +22,10 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6.0.2
+        uses: actions/checkout@v6.0.3
 
       - name: Setup pnpm
-        uses: pnpm/action-setup@v6.0.3
+        uses: pnpm/action-setup@v6.0.9
 
       - name: Setup Node.js
         uses: actions/setup-node@v6.4.0

.github/workflows/test-production.yml

@@ -16,11 +16,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v6.0.2
+    - uses: actions/checkout@v6.0.3
       with:
         submodules: true
     - name: Setup pnpm
-      uses: pnpm/action-setup@v6.0.3
+      uses: pnpm/action-setup@v6.0.9
     - name: Use Node.js
       uses: actions/setup-node@v6.4.0
       with:

.github/workflows/validate-api-json.yml

@@ -17,11 +17,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v6.0.2
+    - uses: actions/checkout@v6.0.3
       with:
         submodules: true
     - name: Setup pnpm
-      uses: pnpm/action-setup@v6.0.3
+      uses: pnpm/action-setup@v6.0.9
     - name: Use Node.js
       uses: actions/setup-node@v6.4.0
       with:

.gitignore

@@ -23,9 +23,8 @@ packages/sw/.yarn/cache
 # pnpm
 .pnpm-store
 
-# Cypress
-cypress/screenshots
-cypress/videos
+# Playwright
+packages/frontend/test/e2e/artifacts
 
 # Coverage
 coverage
@@ -35,7 +34,7 @@ coverage
 !/.config/example.yml
 !/.config/docker_example.yml
 !/.config/docker_example.env
-!/.config/cypress-devcontainer.yml
+!/.config/playwright-devcontainer.yml
 docker-compose.yml
 ./compose.yml
 .devcontainer/compose.yml

.node-version

@@ -1 +1 @@
-22.15.0
+26.4.0

.okteto/okteto-pipeline.yml

@@ -1,6 +0,0 @@
-build:
-  misskey:
-    args:
-      - NODE_ENV=development
-deploy:
-  - helm upgrade --install misskey chart --set image=${OKTETO_BUILD_MISSKEY_IMAGE} --set url="https://misskey-$(kubectl config view --minify -o jsonpath='{..namespace}').cloud.okteto.net" --set environment=development

CHANGELOG.md

@@ -1,3 +1,69 @@
+## 2026.7.0
+
+### Note
+
+**今回のリリースではMisskeyの各種動作要件が変更されます。必ずアップグレード前にお使いの環境をご確認ください。**
+
+- センシティブメディアの判定 (NSFW検出) が、本体に内蔵された nsfwjs による推論から、外部サービス [sensitive-detector](https://github.com/misskey-dev/sensitive-detector) への HTTP 呼び出し方式に変更されました。
+	- これに伴い、本体から `nsfwjs` / `@tensorflow/tfjs` / `@tensorflow/tfjs-node` および同梱の NSFW 判定モデルが削除され、インストール要件 (ネイティブ ML スタック) が緩和されました。
+	- **センシティブ判定機能を利用しているサーバーは対応が必要です。** 別途 [sensitive-detector](https://github.com/misskey-dev/sensitive-detector) サービスを立ち上げ、コントロールパネルの「モデレーション > センシティブなメディアの検出」で接続先 URL を設定してください。接続先が未設定の場合、センシティブ判定は行われません (すべて非センシティブ扱い)。
+	- 画像の正規化・動画フレームの抽出・しきい値判定・集約は引き続き本体側で行われ、外部サービスには正規化済み画像の推論のみを委譲します。
+- Node.js v24, v26 をサポートしました。**Node.js v22 でも動作しますが、今後のリリースで v22 のサポートを終了する予定**ですので、Node.js のアップデートをご検討ください。
+  - Node.js のセキュリティアップデートに伴い、最低動作バージョンを 22.22.2 / 24.17.0 / 26.4.0 に引き上げました。
+  - Docker Image は Node.js 26.4.0-trixie に更新されています。
+- バックエンドで画像処理に用いているライブラリ sharp のシステム要件の変更により、**SSE4.2 命令セットをサポートしていない x86_64 CPU では Misskey が正しく動作しなくなります**。仮想マシンに Misskey をデプロイしている場合や、古いハードウェアをお使いの場合は、アップデート前にお使いの環境をご確認ください。なお、ARM64 など x86_64 ではない環境においてはこの変更による影響はありません。
+
+### General
+- Feat: コントロールパネルから二要素認証を解除できるように
+- Feat: 条件に一致したURLプレビューのサムネイルを隠すことができるように  
+  (Based on https://github.com/MisskeyIO/misskey/pull/214)
+
+### Client
+- 2025.4.0 以前の設定情報の移行処理が削除されました
+	- 2025.4.0 から直接 2026.6.0 以上にアップデートする場合は設定が移行されませんので注意してください。移行したい場合は一度 2026.5.1 を経由してください。
+- Enhance: 画像ビューワーを独自実装に変更・動画プレイヤーを統合
+  - 操作性の改善
+  - ビューワーとMisskeyの各種機能との統合を強化
+  - パフォーマンスの向上
+  - Enhance: マウスホイールで拡大縮小できるように
+  - Fix: 幅が狭い画面で動画の再生が困難な問題を修正
+  - Fix: 一部の画像のみセンシティブなとき、ビューワー内で画像を切り替えるとセンシティブな画像がそのまま表示される問題を修正
+  - Fix: 一部の画像をビューワーで読み込んだ際に正しく表示されない問題を修正
+- Enhance: タイムラインの読み込みパフォーマンスを改善
+- Fix: 「画像を新しいタブで開く」が機能しなくなっていた問題を修正
+- Fix: デバイスタイプをスマートフォンに固定している状態で画面幅が広いとき、画面左上のアイコンが表示されない問題を修正
+- Fix: チャットでIMEの変換を確定するEnterでメッセージが送信されてしまうことがある問題を修正
+- Fix: 自分へのメンションに対する色分けで、判定が大文字/小文字を区別していた問題を修正
+- Fix: いくつかのイベントリスナーが正しく解除されない問題を修正（メモリ使用量の改善）
+- Fix: 非ログイン時トップページをスクロール操作できないことがある問題を修正
+- Fix: ローカルユーザーへのホスト付きメンションが本文に含まれる指名ノートの作成時、投稿フォームにて、当該ユーザーが宛先に含まれていても正しく認識されない問題を修正
+- Fix: ドライブの「このファイルからノートを作成」やギャラリーの「ノートで共有」、誕生日ウィジェットからのノート作成において、通常投稿の下書きが表示される問題を修正
+
+### Server
+- Feat: OpenTelemetryサポート
+  - 詳細な設定はconfigファイルを参照してください。
+  - Sentryとの併用も可能です。Sentry併用時は、PostgreSQL Query と Redis command は Sentry で計装されます。
+  - 以下の自動計装をサポートしています。（計装対象にする項目は設定可能）
+    - PostgreSQL query
+    - Redis command
+    - 全ての受信HTTPリクエスト
+    - 全ての送信HTTPリクエスト
+    - ジョブキュー（エンキュー元のトレースを含む）
+- Enhance: Sentry バックエンドの自動計装を `sentryForBackend.disabledIntegrations` で個別に無効化できるように
+- Enhance: センシティブメディアの判定を外部サービス ([sensitive-detector](https://github.com/misskey-dev/sensitive-detector)) に分離し、`nsfwjs` / `@tensorflow/tfjs(-node)` の同梱と NSFW 判定モデルを廃止 (#16804)
+- Enhance: Node.js 22.23.0以降、24.17.0以降、26.4.0以降をサポートするように
+- Enhance: Docker Image の Node.js を 26.4.0 に、Debian を trixie (v13) に更新
+- Enhance: URLプレビューの結果を内部でキャッシュするように
+- Enhance: API内部エラーのログに構造化属性と正規化したエラー情報を付与し、認証情報を自動的に秘匿するように（従来形式の表示は維持）
+- Enhance: ログ全体の既定levelとlogger domainごとの出力levelを設定できるように
+- Enhance: バックエンドのログを1行JSON形式で出力できるように
+- Fix: `/stats` API のレスポンス型が正しくない問題を修正
+- Fix: ハッシュタグに関連するデータを更新する際のエラーハンドリングを修正
+- Fix: Sentry 使用環境下にて、Misskey が発行した SQL クエリが span に含まれない問題を修正
+- Fix: Sentry 使用環境下にて、外部送信リクエストへ `sentry-trace` / `baggage` ヘッダーが既定で付与されないように
+- Fix: フォロワー限定投稿へのリプライをホーム投稿に出来る問題を修正
+- Fix: ファイルをアップロードするAPIにて、処理終了後に一時ファイルが削除されないことがある問題を修正
+
 ## 2026.6.0
 
 ### General
@@ -25,6 +91,7 @@
 - Enhance: リモートノートクリーニングジョブのスキップ処理のパフォーマンス改善
 - Enhance: リモートノートクリーニングジョブの削除対象検索処理のパフォーマンス改善
 - Enhance: ActivityPub の画像添付に width/height を含めるように
+- Enhance: URLプレビューのデフォルトの User Agent に Misskey サーバーのURLを含めるように
 - Fix: backend バンドルで `@tensorflow/tfjs-node` を external に含めず、起動時に `@mapbox/node-pre-gyp` の `find()` が backend の package.json を誤検出して `is not node-pre-gyp ready` エラーを永続的に吐く問題を修正
 - Fix: MemoryKVCacheのキャッシュGC処理において、更新されたキャッシュが期限切れにならないことがある問題を修正
 - Fix: PerUserDriveChart がシステム所有ファイル (userId が null) の更新で `"group"` の非NULL制約違反によりクラッシュする問題を修正 (#17498)
@@ -33,6 +100,7 @@
 - Fix: `actor` を持たない不正なInboxアクティビティを受信した際に配送ジョブが `TypeError` でクラッシュする問題を修正 (受信時に検証して400で返し、ジョブを積まないように変更)
 - Fix: Startup and shutdown failures (port-in-use, socket permission denied, plugin timeouts, leaked WebSocket connections) are now reported through the misskey logger instead of an UnhandledPromiseRejectionWarning stack trace
 - Fix: リモートのノートに対するメンション数制限が、サーバーが解決できたユーザー数ベースで行われていた問題を修正
+- Fix: セキュリティに関する修正
 
 ## 2026.5.4
 

CONTRIBUTING.md

@@ -600,6 +600,90 @@ TypeScriptでjsonをimportすると、tscでコンパイルするときにその
 コンポーネント自身がmarginを設定するのは問題の元となることはよく知られている
 marginはそのコンポーネントを使う側が設定する
 
+### 命名規則
+
+本来それが略称であっても、通常それでひとつのワードとして用いられるものは、略称として扱わない。
+
+#### 例: IP address
+
+Good: `ipAddress` / `IpAddress`
+
+Bad: `IPAddress`
+
+#### 例: User ID
+
+Good: `userId` / `UserId`
+
+Bad: `userID` / `UserID`
+
+#### 例: XMLなHTTPのRequest
+
+Good: `xmlHttpRequest` / `XmlHttpRequest`
+
+Bad: `XMLHttpRequest` / `XMLHTTPRequest`
+
+### 関数化の基準
+
+汎用性が低く(例えばそれを関数化したとしてもその呼び出しが元の場所一か所しか存在しない)、内容も短い処理(例えば10行以下)は、かえって読みにくくなるため、関数化しない。
+
+また、関数化する場合でも、呼び出しがある特定のスコープに限られる場合は、そのスコープ内に閉じ込めた方が分かりやすく簡潔になる場合がある(ただし本来その処理に不要であっても、構造上親のスコープにある関係のない変数や引数にもアクセスできるようになるため、必ずしもそうすれば設計上綺麗になるというわけでもない。状況に応じて判断すべし)。
+
+Bad:
+
+``` ts
+function withBrankets(x) {
+	return `(${x})`;
+}
+
+function formatPercent(x) {
+	return `${x}%`;
+}
+
+function formatValue(x) {
+	return withBrankets(formatPercent(x));
+}
+
+function showData(a, b) {
+	console.log(formatValue(a));
+	console.log(formatValue(b));
+}
+```
+
+Good:
+
+``` ts
+function formatValue(x) {
+	return `(${x}%)`;
+}
+
+function showData(a, b) {
+	console.log(formatValue(a));
+	console.log(formatValue(b));
+}
+```
+
+or
+
+``` ts
+function showData(a, b) {
+	function formatValue(x) {
+		return `(${x}%)`;
+	}
+
+	console.log(formatValue(a));
+	console.log(formatValue(b));
+}
+```
+
+or
+
+``` ts
+function showData(a, b) {
+	console.log(`(${a}%)`);
+	console.log(`(${b}%)`);
+}
+```
+
 ## その他
 ### HTMLのクラス名で follow という単語は使わない
 広告ブロッカーで誤ってブロックされる

Dockerfile

@@ -1,6 +1,6 @@
 # syntax = docker/dockerfile:1.23
 
-ARG NODE_VERSION=22.22.2-bookworm
+ARG NODE_VERSION=26.4.0-trixie
 
 # build assets & compile TypeScript
 

chart/Chart.yaml

@@ -1,4 +0,0 @@
-apiVersion: v2
-name: misskey
-version: 0.0.0
-description: This chart is created for the purpose of previewing Pull Requests. Do not use this for production use.

chart/files/default.yml

@@ -1,232 +0,0 @@
-#━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
-# Misskey configuration
-#━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
-
-#   ┌─────┐
-#───┘ URL └─────────────────────────────────────────────────────
-
-# Final accessible URL seen by a user.
-# url: https://example.tld/
-
-# ONCE YOU HAVE STARTED THE INSTANCE, DO NOT CHANGE THE
-# URL SETTINGS AFTER THAT!
-
-#   ┌───────────────────────┐
-#───┘ Port and TLS settings └───────────────────────────────────
-
-#
-# Misskey supports two deployment options for public.
-#
-
-# Option 1: With Reverse Proxy
-#
-#                 +----- https://example.tld/ ------------+
-#   +------+      |+-------------+      +----------------+|
-#   | User | ---> || Proxy (443) | ---> | Misskey (3000) ||
-#   +------+      |+-------------+      +----------------+|
-#                 +---------------------------------------+
-#
-#   You need to setup reverse proxy. (eg. nginx)
-#   You do not define 'https' section.
-
-# Option 2: Standalone
-#
-#                 +- https://example.tld/ -+
-#   +------+      |   +---------------+    |
-#   | User | ---> |   | Misskey (443) |    |
-#   +------+      |   +---------------+    |
-#                 +------------------------+
-#
-#   You need to run Misskey as root.
-#   You need to set Certificate in 'https' section.
-
-# To use option 1, uncomment below line.
-port: 3000 # A port that your Misskey server should listen.
-
-# To use option 2, uncomment below lines.
-#port: 443
-
-#https:
-#  # path for certification
-#  key: /etc/letsencrypt/live/example.tld/privkey.pem
-#  cert: /etc/letsencrypt/live/example.tld/fullchain.pem
-
-#   ┌──────────────────────────┐
-#───┘ PostgreSQL configuration └────────────────────────────────
-
-db:
-  host: localhost
-  port: 5432
-
-  # Database name
-  db: misskey
-
-  # Auth
-  user: example-misskey-user
-  pass: example-misskey-pass
-
-  # Whether disable Caching queries
-  #disableCache: true
-
-  # Extra Connection options
-  #extra:
-  #  ssl: true
-
-dbReplications: false
-
-# You can configure any number of replicas here
-#dbSlaves:
-#  -
-#    host:
-#    port:
-#    db:
-#    user:
-#    pass:
-#  -
-#    host:
-#    port:
-#    db:
-#    user:
-#    pass:
-
-#   ┌─────────────────────┐
-#───┘ Redis configuration └─────────────────────────────────────
-
-redis:
-  host: localhost
-  port: 6379
-  #family: 0  # 0=Both, 4=IPv4, 6=IPv6
-  #pass: example-pass
-  #prefix: example-prefix
-  #db: 1
-
-#redisForPubsub:
-#  host: localhost
-#  port: 6379
-#  #family: 0  # 0=Both, 4=IPv4, 6=IPv6
-#  #pass: example-pass
-#  #prefix: example-prefix
-#  #db: 1
-
-#redisForJobQueue:
-#  host: localhost
-#  port: 6379
-#  #family: 0  # 0=Both, 4=IPv4, 6=IPv6
-#  #pass: example-pass
-#  #prefix: example-prefix
-#  #db: 1
-
-#redisForTimelines:
-#  host: redis
-#  port: 6379
-#  #family: 0  # 0=Both, 4=IPv4, 6=IPv6
-#  #pass: example-pass
-#  #prefix: example-prefix
-#  #db: 1
-
-#redisForReactions:
-#  host: redis
-#  port: 6379
-#  #family: 0  # 0=Both, 4=IPv4, 6=IPv6
-#  #pass: example-pass
-#  #prefix: example-prefix
-#  #db: 1
-
-#   ┌───────────────────────────┐
-#───┘ MeiliSearch configuration └─────────────────────────────
-
-#meilisearch:
-#  host: localhost
-#  port: 7700
-#  apiKey: ''
-#  ssl: true
-#  index: ''
-
-#   ┌───────────────┐
-#───┘ ID generation └───────────────────────────────────────────
-
-# You can select the ID generation method.
-# You don't usually need to change this setting, but you can
-# change it according to your preferences.
-
-# Available methods:
-# aid ... Short, Millisecond accuracy
-# aidx ... Millisecond accuracy
-# meid ... Similar to ObjectID, Millisecond accuracy
-# ulid ... Millisecond accuracy
-# objectid ... This is left for backward compatibility
-
-# ONCE YOU HAVE STARTED THE INSTANCE, DO NOT CHANGE THE
-# ID SETTINGS AFTER THAT!
-
-id: "aidx"
-
-#   ┌────────────────┐
-#───┘ Error tracking └──────────────────────────────────────────
-
-# Sentry is available for error tracking.
-# See the Sentry documentation for more details on options.
-
-#sentryForBackend:
-#  enableNodeProfiling: true
-#  options:
-#    dsn: 'https://examplePublicKey@o0.ingest.sentry.io/0'
-
-#sentryForFrontend:
-#  vueIntegration:
-#    tracingOptions:
-#      trackComponents: true
-#  browserTracingIntegration:
-#  replayIntegration:
-#  options:
-#    dsn: 'https://examplePublicKey@o0.ingest.sentry.io/0'
-
-#   ┌─────────────────────┐
-#───┘ Other configuration └─────────────────────────────────────
-
-# Whether disable HSTS
-#disableHsts: true
-
-# Number of worker processes
-#clusterLimit: 1
-
-# Number of threads of extra thread pool for CPU-intensive tasks (per worker)
-#threadPoolSize: 1
-
-# Job concurrency per worker
-# deliverJobConcurrency: 128
-# inboxJobConcurrency: 16
-
-# Job rate limiter
-# deliverJobPerSec: 128
-# inboxJobPerSec: 32
-
-# Job attempts
-# deliverJobMaxAttempts: 12
-# inboxJobMaxAttempts: 8
-
-# IP address family used for outgoing request (ipv4, ipv6 or dual)
-#outgoingAddressFamily: ipv4
-
-# Proxy for HTTP/HTTPS
-#proxy: http://127.0.0.1:3128
-
-#proxyBypassHosts: [
-#  'example.com',
-#  '192.0.2.8'
-#]
-
-# Proxy for SMTP/SMTPS
-#proxySmtp: http://127.0.0.1:3128   # use HTTP/1.1 CONNECT
-#proxySmtp: socks4://127.0.0.1:1080 # use SOCKS4
-#proxySmtp: socks5://127.0.0.1:1080 # use SOCKS5
-
-# Media Proxy
-#mediaProxy: https://example.com/proxy
-
-#allowedPrivateNetworks: [
-#  '127.0.0.1/32'
-#]
-
-# Upload or download file size limits (bytes)
-#maxFileSize: 262144000

chart/templates/ConfigMap.yml

@@ -1,8 +0,0 @@
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: {{ include "misskey.fullname" . }}-configuration
-data:
-  default.yml: |-
-    {{ .Files.Get "files/default.yml"|nindent 4 }}
-    url: {{ .Values.url }}

chart/templates/Deployment.yml

@@ -1,47 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: {{ include "misskey.fullname" . }}
-  labels:
-    {{- include "misskey.labels" . | nindent 4 }}
-spec:
-  selector:
-    matchLabels:
-      {{- include "misskey.selectorLabels" . | nindent 6 }}
-  replicas: 1
-  template:
-    metadata:
-      labels:
-        {{- include "misskey.selectorLabels" . | nindent 8 }}
-    spec:
-      containers:
-        - name: misskey
-          image: {{ .Values.image }}
-          env:
-            - name: NODE_ENV
-              value: {{ .Values.environment }}
-          volumeMounts:
-            - name: {{ include "misskey.fullname" . }}-configuration
-              mountPath: /misskey/.config
-              readOnly: true
-          ports:
-            - containerPort: 3000
-        - name: postgres
-          image: postgres:18-alpine
-          env:
-            - name: POSTGRES_USER
-              value: "example-misskey-user"
-            - name: POSTGRES_PASSWORD
-              value: "example-misskey-pass"
-            - name: POSTGRES_DB
-              value: "misskey"
-          ports:
-            - containerPort: 5432
-        - name: redis
-          image: redis:7-alpine
-          ports:
-            - containerPort: 6379
-      volumes:
-        - name: {{ include "misskey.fullname" . }}-configuration
-          configMap:
-            name: {{ include "misskey.fullname" . }}-configuration

chart/templates/Service.yml

@@ -1,14 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: {{ include "misskey.fullname" . }}
-  annotations:
-    dev.okteto.com/auto-ingress: "true"
-spec:
-  type: ClusterIP
-  ports:
-    - port: 3000
-      protocol: TCP
-      name: http
-  selector:
-    {{- include "misskey.selectorLabels" . | nindent 4 }}

chart/templates/_helpers.tpl

@@ -1,62 +0,0 @@
-{{/*
-Expand the name of the chart.
-*/}}
-{{- define "misskey.name" -}}
-{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
-{{- end }}
-
-{{/*
-Create a default fully qualified app name.
-We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
-If release name contains chart name it will be used as a full name.
-*/}}
-{{- define "misskey.fullname" -}}
-{{- if .Values.fullnameOverride }}
-{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
-{{- else }}
-{{- $name := default .Chart.Name .Values.nameOverride }}
-{{- if contains $name .Release.Name }}
-{{- .Release.Name | trunc 63 | trimSuffix "-" }}
-{{- else }}
-{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
-{{- end }}
-{{- end }}
-{{- end }}
-
-{{/*
-Create chart name and version as used by the chart label.
-*/}}
-{{- define "misskey.chart" -}}
-{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
-{{- end }}
-
-{{/*
-Common labels
-*/}}
-{{- define "misskey.labels" -}}
-helm.sh/chart: {{ include "misskey.chart" . }}
-{{ include "misskey.selectorLabels" . }}
-{{- if .Chart.AppVersion }}
-app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
-{{- end }}
-app.kubernetes.io/managed-by: {{ .Release.Service }}
-{{- end }}
-
-{{/*
-Selector labels
-*/}}
-{{- define "misskey.selectorLabels" -}}
-app.kubernetes.io/name: {{ include "misskey.name" . }}
-app.kubernetes.io/instance: {{ .Release.Name }}
-{{- end }}
-
-{{/*
-Create the name of the service account to use
-*/}}
-{{- define "misskey.serviceAccountName" -}}
-{{- if .Values.serviceAccount.create }}
-{{- default (include "misskey.fullname" .) .Values.serviceAccount.name }}
-{{- else }}
-{{- default "default" .Values.serviceAccount.name }}
-{{- end }}
-{{- end }}

chart/values.yml

@@ -1,3 +0,0 @@
-url: https://example.tld/
-image: okteto.dev/misskey
-environment: production

cypress.config.ts

@@ -1,7 +0,0 @@
-import { defineConfig } from 'cypress'
-
-export default defineConfig({
-  e2e: {
-    baseUrl: 'http://localhost:61812',
-  },
-})

cypress/e2e/basic.cy.ts

@@ -1,265 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-describe('Before setup instance', () => {
-	beforeEach(() => {
-		cy.resetState();
-	});
-
-	afterEach(() => {
-		// テスト終了直前にページ遷移するようなテストケース(例えばアカウント作成)だと、たぶんCypressのバグでブラウザの内容が次のテストケースに引き継がれてしまう(例えばアカウントが作成し終わった段階からテストが始まる)。
-		// waitを入れることでそれを防止できる
-		cy.wait(1000);
-	});
-
-  it('successfully loads', () => {
-    cy.visitHome();
-  });
-
-	it('setup instance', () => {
-    cy.visitHome();
-
-		cy.intercept('POST', '/api/admin/accounts/create').as('signup');
-
-		cy.get('[data-cy-admin-initial-password] input').type('example_password_please_change_this_or_you_will_get_hacked');
-		cy.get('[data-cy-admin-username] input').type('admin');
-		cy.get('[data-cy-admin-password] input').type('admin1234');
-		cy.get('[data-cy-admin-ok]').click();
-
-		// なぜか動かない
-		//cy.wait('@signup').should('have.property', 'response.statusCode');
-		cy.wait('@signup');
-
-		cy.intercept('POST', '/api/admin/update-meta').as('update-meta');
-
-		cy.get('[data-cy-next]').click();
-		cy.get('[data-cy-server-name] input').type('Testskey');
-		cy.get('[data-cy-server-setup-wizard-apply]').click();
-
-		cy.wait('@update-meta');
-  });
-});
-
-describe('After setup instance', () => {
-	beforeEach(() => {
-		cy.resetState();
-
-		// インスタンス初期セットアップ
-		cy.registerUser('admin', 'pass', true);
-	});
-
-	afterEach(() => {
-		// テスト終了直前にページ遷移するようなテストケース(例えばアカウント作成)だと、たぶんCypressのバグでブラウザの内容が次のテストケースに引き継がれてしまう(例えばアカウントが作成し終わった段階からテストが始まる)。
-		// waitを入れることでそれを防止できる
-		cy.wait(1000);
-	});
-
-  it('successfully loads', () => {
-    cy.visitHome();
-  });
-
-	it('signup', () => {
-		cy.visitHome();
-
-		cy.intercept('POST', '/api/signup').as('signup');
-
-		cy.get('[data-cy-signup]').click();
-		cy.get('[data-cy-signup-rules-continue]').should('be.disabled');
-		cy.get('[data-cy-signup-rules-notes-agree] [data-cy-switch-toggle]').click();
-		cy.get('[data-cy-modal-dialog-ok]').click();
-		cy.get('[data-cy-signup-rules-continue]').should('not.be.disabled');
-		cy.get('[data-cy-signup-rules-continue]').click();
-
-		cy.get('[data-cy-signup-submit]').should('be.disabled');
-		cy.get('[data-cy-signup-username] input').type('alice');
-		cy.get('[data-cy-signup-submit]').should('be.disabled');
-		cy.get('[data-cy-signup-password] input').type('alice1234');
-		cy.get('[data-cy-signup-submit]').should('be.disabled');
-		cy.get('[data-cy-signup-password-retype] input').type('alice1234');
-		cy.get('[data-cy-signup-submit]').should('be.disabled');
-		cy.get('[data-cy-signup-invitation-code] input').type('test-invitation-code');
-		cy.get('[data-cy-signup-submit]').should('not.be.disabled');
-		cy.get('[data-cy-signup-submit]').click();
-
-		cy.wait('@signup');
-  });
-
-  it('signup with duplicated username', () => {
-		cy.registerUser('alice', 'alice1234');
-
-		cy.visitHome();
-
-		// ユーザー名が重複している場合の挙動確認
-		cy.get('[data-cy-signup]').click();
-		cy.get('[data-cy-signup-rules-continue]').should('be.disabled');
-		cy.get('[data-cy-signup-rules-notes-agree] [data-cy-switch-toggle]').click();
-		cy.get('[data-cy-modal-dialog-ok]').click();
-		cy.get('[data-cy-signup-rules-continue]').should('not.be.disabled');
-		cy.get('[data-cy-signup-rules-continue]').click();
-
-		cy.get('[data-cy-signup-username] input').type('alice');
-		cy.get('[data-cy-signup-password] input').type('alice1234');
-		cy.get('[data-cy-signup-password-retype] input').type('alice1234');
-		cy.get('[data-cy-signup-submit]').should('be.disabled');
-  });
-});
-
-describe('After user signup', () => {
-	beforeEach(() => {
-		cy.resetState();
-
-		// インスタンス初期セットアップ
-		cy.registerUser('admin', 'pass', true);
-
-		// ユーザー作成
-		cy.registerUser('alice', 'alice1234');
-	});
-
-	afterEach(() => {
-		// テスト終了直前にページ遷移するようなテストケース(例えばアカウント作成)だと、たぶんCypressのバグでブラウザの内容が次のテストケースに引き継がれてしまう(例えばアカウントが作成し終わった段階からテストが始まる)。
-		// waitを入れることでそれを防止できる
-		cy.wait(1000);
-	});
-
-  it('successfully loads', () => {
-    cy.visitHome();
-  });
-
-	it('signin', () => {
-		cy.visitHome();
-
-		cy.intercept('POST', '/api/signin-flow').as('signin');
-
-		cy.get('[data-cy-signin]').click();
-
-		cy.get('[data-cy-signin-page-input]').should('be.visible', { timeout: 1000 });
-		// Enterキーで続行できるかの確認も兼ねる
-		cy.get('[data-cy-signin-username] input').type('alice{enter}');
-
-		cy.get('[data-cy-signin-page-password]').should('be.visible', { timeout: 10000 });
-		// Enterキーで続行できるかの確認も兼ねる
-		cy.get('[data-cy-signin-password] input').type('alice1234{enter}');
-
-		cy.wait('@signin');
-  });
-
-	it('suspend', function() {
-		cy.request('POST', '/api/admin/suspend-user', {
-			i: this.admin.token,
-			userId: this.alice.id,
-		});
-
-		cy.visitHome();
-
-		cy.get('[data-cy-signin]').click();
-
-		cy.get('[data-cy-signin-page-input]').should('be.visible', { timeout: 1000 });
-		cy.get('[data-cy-signin-username] input').type('alice{enter}');
-
-		// TODO: cypressにブラウザの言語指定できる機能が実装され次第英語のみテストするようにする
-		cy.contains(/アカウントが凍結されています|This account has been suspended due to/gi);
-	});
-});
-
-describe('After user signed in', () => {
-	beforeEach(() => {
-		cy.resetState();
-
-		// インスタンス初期セットアップ
-		cy.registerUser('admin', 'pass', true);
-
-		// ユーザー作成
-		cy.registerUser('alice', 'alice1234');
-
-		cy.login('alice', 'alice1234');
-	});
-
-	afterEach(() => {
-		// テスト終了直前にページ遷移するようなテストケース(例えばアカウント作成)だと、たぶんCypressのバグでブラウザの内容が次のテストケースに引き継がれてしまう(例えばアカウントが作成し終わった段階からテストが始まる)。
-		// waitを入れることでそれを防止できる
-		cy.wait(1000);
-	});
-
-  it('successfully loads', () => {
-		// 表示に時間がかかるのでデフォルト秒数だとタイムアウトする
-		cy.get('[data-cy-user-setup-continue]', { timeout: 30000 }).should('be.visible');
-  });
-
-	it('account setup wizard', () => {
-		// 表示に時間がかかるのでデフォルト秒数だとタイムアウトする
-		cy.get('[data-cy-user-setup-continue]', { timeout: 30000 }).click();
-
-		cy.get('[data-cy-user-setup-user-name] input').type('ありす');
-		cy.get('[data-cy-user-setup-user-description] textarea').type('ほげ');
-		// TODO: アイコン設定テスト
-
-		cy.get('[data-cy-user-setup-continue]').click();
-
-		// プライバシー設定
-
-		cy.get('[data-cy-user-setup-continue]').click();
-
-		// フォローはスキップ
-
-		cy.get('[data-cy-user-setup-continue]').click();
-
-		// プッシュ通知設定はスキップ
-
-		cy.get('[data-cy-user-setup-continue]').click();
-
-		cy.get('[data-cy-user-setup-continue]').click();
-  });
-});
-
-describe('After user setup', () => {
-	beforeEach(() => {
-		cy.resetState();
-
-		// インスタンス初期セットアップ
-		cy.registerUser('admin', 'pass', true);
-
-		// ユーザー作成
-		cy.registerUser('alice', 'alice1234');
-
-		cy.login('alice', 'alice1234');
-
-		// アカウント初期設定ウィザード
-		// 表示に時間がかかるのでデフォルト秒数だとタイムアウトする
-		cy.get('[data-cy-user-setup] [data-cy-modal-window-close]', { timeout: 30000 }).click();
-		cy.get('[data-cy-modal-dialog-ok]').click();
-	});
-
-	afterEach(() => {
-		// テスト終了直前にページ遷移するようなテストケース(例えばアカウント作成)だと、たぶんCypressのバグでブラウザの内容が次のテストケースに引き継がれてしまう(例えばアカウントが作成し終わった段階からテストが始まる)。
-		// waitを入れることでそれを防止できる
-		cy.wait(1000);
-	});
-
-	it('note', () => {
-		cy.get('[data-cy-open-post-form]').should('be.visible');
-		cy.get('[data-cy-open-post-form]').click();
-		cy.get('[data-cy-post-form-text]').type('Hello, Misskey!');
-		cy.get('[data-cy-open-post-form-submit]').click();
-
-		cy.contains('Hello, Misskey!', { timeout: 15000 });
-  });
-
-	it('open note form with hotkey', () => {
-		// Wait until the page loads
-		cy.get('[data-cy-open-post-form]').should('be.visible');
-		// Use trigger() to give different `code` to test if hotkeys also work on non-QWERTY keyboards.
-		cy.document().trigger("keydown", { eventConstructor: 'KeyboardEvent', key: "n", code: "KeyL" });
-		// See if the form is opened
-		cy.get('[data-cy-post-form-text]').should('be.visible');
-		// Close it
-		cy.focused().trigger("keydown", { eventConstructor: 'KeyboardEvent', key: "Escape", code: "Escape" });
-		// See if the form is closed
-		cy.get('[data-cy-post-form-text]').should('not.be.visible');
-  });
-});
-
-// TODO: 投稿フォームの公開範囲指定のテスト
-// TODO: 投稿フォームのファイル添付のテスト
-// TODO: 投稿フォームのハッシュタグ保持フィールドのテスト

cypress/e2e/router.cy.ts

@@ -1,35 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-describe('Router transition', () => {
-	describe('Redirect', () => {
-		// サーバの初期化。ルートのテストに関しては各describeごとに1度だけ実行で十分だと思う（使いまわした方が早い）
-		before(() => {
-			cy.resetState();
-
-			// インスタンス初期セットアップ
-			cy.registerUser('admin', 'pass', true);
-
-			// ユーザー作成
-			cy.registerUser('alice', 'alice1234');
-
-			cy.login('alice', 'alice1234');
-
-			// アカウント初期設定ウィザード
-			// 表示に時間がかかるのでデフォルト秒数だとタイムアウトする
-			cy.get('[data-cy-user-setup] [data-cy-modal-window-close]', { timeout: 30000 }).click();
-			cy.wait(500);
-			cy.get('[data-cy-modal-dialog-ok]').click();
-		});
-
-		it('redirect to user profile', () => {
-			// テストのためだけに用意されたリダイレクト用ルートに飛ぶ
-			cy.visit('/redirect-test');
-
-			// プロフィールページのURLであることを確認する
-			cy.url().should('include', '/@alice')
-		});
-	});
-});

cypress/e2e/widgets.cy.ts

@@ -1,76 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-/* flaky
-describe('After user signed in', () => {
-	beforeEach(() => {
-		cy.resetState();
-		cy.viewport('macbook-16');
-
-		// インスタンス初期セットアップ
-		cy.registerUser('admin', 'pass', true);
-
-		// ユーザー作成
-		cy.registerUser('alice', 'alice1234');
-
-		cy.login('alice', 'alice1234');
-
-		// アカウント初期設定ウィザード
-		cy.get('[data-cy-user-setup] [data-cy-modal-window-close]').click();
-		cy.get('[data-cy-modal-dialog-ok]').click();
-	});
-
-	afterEach(() => {
-		// テスト終了直前にページ遷移するようなテストケース(例えばアカウント作成)だと、たぶんCypressのバグでブラウザの内容が次のテストケースに引き継がれてしまう(例えばアカウントが作成し終わった段階からテストが始まる)。
-		// waitを入れることでそれを防止できる
-		cy.wait(1000);
-	});
-
-  it('widget edit toggle is visible', () => {
-		cy.get('[data-cy-widget-edit]').should('be.visible');
-  });
-
-	it('widget select should be visible in edit mode', () => {
-		cy.get('[data-cy-widget-edit]').click();
-		cy.get('[data-cy-widget-select]').should('be.visible');
-  });
-
-	it('first widget should be removed', () => {
-		cy.get('[data-cy-widget-edit]').click();
-		cy.get('[data-cy-customize-container]:first-child [data-cy-customize-container-remove]._button').click();
-		cy.get('[data-cy-customize-container]').should('have.length', 2);
-	});
-
-	function buildWidgetTest(widgetName) {
-		it(`${widgetName} widget should get added`, () => {
-			cy.get('[data-cy-widget-edit]').click();
-			cy.get('[data-cy-widget-select] select').select(widgetName, { force: true });
-			cy.get('[data-cy-bg]._modalBg[data-cy-transparent]').click({ multiple: true, force: true });
-			cy.get('[data-cy-widget-add]').click({ force: true });
-			cy.get(`[data-cy-mkw-${widgetName}]`).should('exist');
-		});
-	}
-
-	buildWidgetTest('memo');
-	buildWidgetTest('notifications');
-	buildWidgetTest('timeline');
-	buildWidgetTest('calendar');
-	buildWidgetTest('rss');
-	buildWidgetTest('trends');
-	buildWidgetTest('clock');
-	buildWidgetTest('activity');
-	buildWidgetTest('photos');
-	buildWidgetTest('digitalClock');
-	buildWidgetTest('federation');
-	buildWidgetTest('postForm');
-	buildWidgetTest('slideshow');
-	buildWidgetTest('serverMetric');
-	buildWidgetTest('onlineUsers');
-	buildWidgetTest('jobQueue');
-	buildWidgetTest('button');
-	buildWidgetTest('aiscript');
-	buildWidgetTest('aichan');
-});
-*/

cypress/fixtures/example.json

@@ -1,5 +0,0 @@
-{
-  "name": "Using fixtures to represent data",
-  "email": "hello@cypress.io",
-  "body": "Fixtures are a great way to mock data for responses to routes"
-}

cypress/support/commands.ts

@@ -1,67 +0,0 @@
-// ***********************************************
-// This example commands.js shows you how to
-// create various custom commands and overwrite
-// existing commands.
-//
-// For more comprehensive examples of custom
-// commands please read more here:
-// https://on.cypress.io/custom-commands
-// ***********************************************
-//
-//
-// -- This is a parent command --
-// Cypress.Commands.add('login', (email, password) => { ... })
-//
-//
-// -- This is a child command --
-// Cypress.Commands.add('drag', { prevSubject: 'element'}, (subject, options) => { ... })
-//
-//
-// -- This is a dual command --
-// Cypress.Commands.add('dismiss', { prevSubject: 'optional'}, (subject, options) => { ... })
-//
-//
-// -- This will overwrite an existing command --
-// Cypress.Commands.overwrite('visit', (originalFn, url, options) => { ... })
-
-Cypress.Commands.add('visitHome', () => {
-	cy.visit('/');
-	cy.get('button', { timeout: 30000 }).should('be.visible');
-})
-
-Cypress.Commands.add('resetState', () => {
-	// iframe.contentWindow.indexedDB.deleteDatabase() がchromeのバグで使用できないため、indexedDBを無効化している。
-	// see https://github.com/misskey-dev/misskey/issues/13605#issuecomment-2053652123
-	/*
-	cy.window().then(win => {
-		win.indexedDB.deleteDatabase('keyval-store');
-	});
-	 */
-	cy.request('POST', '/api/reset-db', {}).as('reset');
-	cy.get('@reset').its('status').should('equal', 204);
-	cy.reload(true);
-});
-
-Cypress.Commands.add('registerUser', (username, password, isAdmin = false) => {
-	const route = isAdmin ? '/api/admin/accounts/create' : '/api/signup';
-
-	cy.request('POST', route, {
-		username: username,
-		password: password,
-		...(isAdmin ? { setupPassword: 'example_password_please_change_this_or_you_will_get_hacked' } : {}),
-	}).its('body').as(username);
-});
-
-Cypress.Commands.add('login', (username, password) => {
-	cy.visitHome();
-
-	cy.intercept('POST', '/api/signin-flow').as('signin');
-
-	cy.get('[data-cy-signin]').click();
-	cy.get('[data-cy-signin-page-input]').should('be.visible', { timeout: 1000 });
-	cy.get('[data-cy-signin-username] input').type(`${username}{enter}`);
-	cy.get('[data-cy-signin-page-password]').should('be.visible', { timeout: 10000 });
-	cy.get('[data-cy-signin-password] input').type(`${password}{enter}`);
-
-	cy.wait('@signin').as('signedIn');
-});

cypress/support/e2e.ts

@@ -1,34 +0,0 @@
-// ***********************************************************
-// This example support/index.js is processed and
-// loaded automatically before your test files.
-//
-// This is a great place to put global configuration and
-// behavior that modifies Cypress.
-//
-// You can change the location of this file or turn off
-// automatically serving support files with the
-// 'supportFile' configuration option.
-//
-// You can read more here:
-// https://on.cypress.io/configuration
-// ***********************************************************
-
-// Import commands.js using ES2015 syntax:
-import './commands'
-
-// Alternatively you can use CommonJS syntax:
-// require('./commands')
-
-Cypress.on('uncaught:exception', (err, runnable) => {
-	if ([
-		'The source image cannot be decoded',
-
-		// Chrome
-		'ResizeObserver loop limit exceeded',
-
-		// Firefox
-		'ResizeObserver loop completed with undelivered notifications',
-	].some(msg => err.message.includes(msg))) {
-		return false;
-	}
-});

cypress/support/index.ts

@@ -1,19 +0,0 @@
-declare global {
-	namespace Cypress {
-		interface Chainable {
-			login(username: string, password: string): Chainable<void>;
-
-			registerUser(
-				username: string,
-				password: string,
-				isAdmin?: boolean
-			): Chainable<void>;
-
-			resetState(): Chainable<void>;
-
-			visitHome(): Chainable<void>;
-		}
-	}
-}
-
-export {}

cypress/tsconfig.json

@@ -1,8 +0,0 @@
-{
-	"compilerOptions": {
-		"lib": ["dom"],
-		"target": "esnext",
-		"types": ["cypress", "node"]
-	},
-	"include": ["./**/*.ts"]
-}

docs/superpowers/specs/2026-07-15-frontend-bundle-generated-chunks-design.md

@@ -0,0 +1,176 @@
+# Frontend bundle report: generated chunk handling
+
+## Background
+
+The frontend bundle report compares the Vite manifests produced for the pull request base and head builds. Chunks with a `src` value are currently identified by that source path. Chunks without `src` are identified by Rolldown's generated `name`.
+
+Generated names are not unique or stable identities. Multiple unrelated shared chunks can all be called `dist`, `esm`, `index`, or a similar path-derived name. The current collection logic stores those chunks in a `Map` under `chunk:<name>`, so later entries overwrite earlier entries. This produces two problems:
+
+1. unrelated chunks can be compared as if they were the same chunk; and
+2. overwritten chunks are omitted from the reported total.
+
+Individual size changes for these generated shared chunks are not sufficiently actionable to justify heuristic matching.
+
+## Goals
+
+- Never compare unrelated generated chunks as the same chunk.
+- Keep generated chunks out of the individual chunk-diff rows.
+- Preserve the contribution of every physical JavaScript chunk in totals.
+- Show the aggregate size change of generated chunks so unexplained bundle growth remains visible.
+- Apply the same rules to the full chunk report and the startup chunk report.
+- Continue comparing source-backed chunks and intentionally named chunks.
+
+## Non-goals
+
+- Inferring chunk identity from module-set similarity.
+- Preserving an `updated` relationship for every shared chunk after code splitting changes.
+- Changing the frontend's code-splitting strategy or output filenames.
+- Suppressing specific names such as `esm` or `dist` with a denylist.
+
+## Approaches considered
+
+### Denylist generated-looking names
+
+Exclude names such as `esm`, `dist`, `lib`, and `index`.
+
+This is not selected because Rolldown can generate many other names, and a denylist can also hide an intentionally named chunk. It would leave the underlying name collision and total-size bug in place.
+
+### Compare only stable identities and aggregate the rest
+
+Classify chunks by whether the report has a stable semantic identity. Source-backed chunks and explicitly supported manual chunk names remain individually comparable. All other generated chunks are retained as physical files but shown only as an aggregate.
+
+This is the selected approach. It removes false comparisons without introducing matching heuristics, and it keeps all bytes visible.
+
+### Match shared chunks by their module sets
+
+Use visualizer metadata to compare exact or similar sets of module IDs.
+
+This could retain more individual diffs, but splits, merges, dependency-version paths, and small module movements make the matching policy complex and potentially misleading. It can be added later if aggregate data proves insufficient.
+
+## Design
+
+### Separate physical chunks from comparable identities
+
+`collectReport` will no longer use a single map keyed by the comparison identity as its source of truth. It will collect every resolved JavaScript output file exactly once into a physical chunk collection.
+
+Each physical chunk contains:
+
+- its resolved relative output path;
+- its byte size;
+- its manifest key, when present;
+- its display name; and
+- an optional comparison key.
+
+The physical output path is used only for de-duplication within one build. It is not used to match changed chunks across builds.
+
+### Comparison-key classification
+
+A chunk receives a comparison key only in one of these cases:
+
+1. `chunk.src` is present: use `src:<normalized source path>`.
+2. `chunk.name` is in an explicit allowlist of intentionally stable manual chunks: use `named:<name>`.
+
+The initial stable-name allowlist is:
+
+- `vue`
+- `i18n`
+
+These names correspond to the explicit `codeSplitting.groups` configuration in `packages/frontend/vite.config.ts`.
+
+All other manifest chunks without `src`, including generated names such as `esm` and `dist`, receive no comparison key. JavaScript files found in the localized output directory but absent from the manifest also receive no comparison key.
+
+If a supposedly stable comparison key occurs more than once within one build, the report must not silently overwrite it. Collection will fail with a descriptive error because duplicate `src` or allowlisted manual names violate the assumptions required for a correct comparison.
+
+### Full chunk report
+
+The report computes three independent values:
+
+1. **Total:** the sum of every unique physical JavaScript chunk.
+2. **Generated chunk aggregate:** the sum of chunks without a comparison key.
+3. **Individual rows:** before/after comparisons for stable comparison keys only.
+
+The table starts with the existing `(total)` row. Generated chunks are rendered at the bottom of the table as one aggregate row such as:
+
+```text
+(other generated chunks)
+```
+
+This row compares aggregate sizes, not individual chunk identities. Generated chunks do not participate in the updated/added/removed row counts. No additional generated-chunk count note is rendered below the table.
+
+### Small-delta aggregation
+
+Stable comparison rows whose absolute byte delta is at most `5 B` are grouped into an `(other)` aggregate instead of being rendered individually. The threshold is inclusive: deltas from `-5 B` through `+5 B` are grouped, while a `6 B` absolute delta remains an individual row. Small additions and removals are handled by the same rule.
+
+The `(other)` row reports the sum of the grouped chunks' before sizes and the sum of their after sizes. It does not expose an arbitrary representative filename. In the full chunk report, only changed rows are candidates because unchanged rows are already omitted. In the startup report, all rows currently eligible for display are candidates, so unchanged rows are also grouped instead of being listed individually.
+
+The updated/added/removed counts are calculated before small-delta rows are grouped. Therefore the summary continues to include every stable changed chunk, including chunks represented only by `(other)`.
+
+Table rows are ordered as follows:
+
+1. `(total)`;
+2. one empty separator row;
+3. individual stable comparison rows whose absolute delta is greater than `5 B`;
+4. `(other generated chunks)`, when generated chunks exist; and
+5. `(other)`, when small-delta stable chunks exist.
+
+There is no additional separator row before the aggregate rows. If no individual stable row exists, the empty row after `(total)` is therefore immediately followed by the aggregate rows.
+
+The existing 30-row limit applies after small-delta rows have been removed from the individual-row candidates.
+
+### Startup chunk report
+
+Startup traversal continues to follow the entry chunk's static `imports`, but it records manifest keys or resolved physical file paths rather than generated comparison keys. This prevents two startup chunks named `dist` from collapsing into one.
+
+Startup totals include every unique physical startup chunk. Stable startup chunks receive individual rows, while startup chunks without stable identities contribute to the same `(other generated chunks)` aggregate row within the startup table.
+
+### Displayed filenames
+
+For an individually comparable chunk, the details should expose both filenames when they differ. A single before-side filename must not imply that the after size belongs to that same file.
+
+The display can use one filename when unchanged and `before → after` when the content-hashed filename differs.
+
+The generated aggregate row does not display an arbitrary representative filename.
+
+## Data flow
+
+1. Read each build's Vite manifest.
+2. Resolve localized output files and collect unique physical chunks.
+3. Attach optional stable comparison keys using the classification rules.
+4. Traverse startup imports using manifest identities and map them to physical chunks.
+5. Calculate full and startup totals from physical chunks.
+6. Calculate generated aggregates from chunks without comparison keys.
+7. Compare only unique stable keys for individual rows.
+8. Render totals, generated aggregates, and stable rows.
+
+## Error handling
+
+- A manifest entry whose expected localized JavaScript file is absent remains a fatal report-generation error.
+- Duplicate physical output paths are de-duplicated and counted once.
+- Duplicate stable comparison keys fail with an error that includes the key and conflicting files.
+- Missing or malformed manifest data remains fatal rather than producing a partial report.
+
+## Testing
+
+Add focused fixtures or pure-function tests covering:
+
+- two unrelated `dist` chunks are both counted in total and grouped into the generated aggregate;
+- `dist` and `esm` chunks never produce individual comparison rows;
+- source-backed chunks with the same `src` are reported as updated;
+- source-backed additions and removals remain visible;
+- allowlisted `vue` and `i18n` chunks remain individually comparable;
+- duplicate stable keys produce a descriptive error instead of overwriting;
+- full totals equal the sum of all unique physical chunks;
+- startup totals include multiple same-name generated chunks exactly once each;
+- generated aggregate changes do not affect the updated/added/removed summary counts;
+- differing before/after filenames are rendered without attributing both sizes to one file;
+- deltas of exactly `5 B` are grouped into `(other)`, while `6 B` deltas remain individual;
+- small updated, added, and removed chunks remain included in the summary counts;
+- an empty separator row appears immediately after `(total)`, with no additional separator before `(other generated chunks)` or `(other)`;
+- no generated-chunk grouping note is rendered below the table; and
+- the same small-delta and ordering rules apply to the full and startup tables.
+
+Validation should include the focused tests and repository lint. No CHANGELOG entry is required because this changes developer-facing CI reporting rather than Misskey user behavior.
+
+## Future extension
+
+If aggregate generated-chunk data is later found insufficient, visualizer module metadata can support a separate opt-in analysis. That extension must preserve the physical-chunk accounting introduced here and must not reintroduce name-based identity.

locales/ca-ES.yml

@@ -1361,14 +1361,11 @@ information: "Informació"
 chat: "Xat"
 directMessage: "Xateja amb aquest usuari"
 directMessage_short: "Missatge"
-migrateOldSettings: "Migrar la configuració anterior"
-migrateOldSettings_description: "Normalment això es fa automàticament, però si la transició no es fa, el procés es pot iniciar manualment. S'esborrarà la configuració actual."
 compress: "Comprimir "
 right: "Dreta"
 bottom: "A baix "
 top: "A dalt "
 embed: "Incrustar"
-settingsMigrating: "Estem migrant la teva configuració. Si us plau espera un moment... (També pots fer la migració més tard, manualment, anant a Preferències → Altres → Migrar configuració antiga)"
 readonly: "Només lectura"
 goToDeck: "Tornar al tauler"
 federationJobs: "Treballs de federació"

locales/de-DE.yml

@@ -1358,14 +1358,11 @@ information: "Über"
 chat: "Chat"
 directMessage: "Mit dem Benutzer chatten"
 directMessage_short: "Nachrichten"
-migrateOldSettings: "Alte Client-Einstellungen migrieren"
-migrateOldSettings_description: "Dies sollte normalerweise automatisch geschehen, aber wenn die Migration aus irgendeinem Grund nicht erfolgreich war, kannst du den Migrationsprozess selbst manuell auslösen. Die aktuellen Konfigurationsinformationen werden dabei überschrieben."
 compress: "Komprimieren"
 right: "Rechts"
 bottom: "Unten"
 top: "Oben"
 embed: "Einbetten"
-settingsMigrating: "Deine Einstellungen werden gerade migriert. Bitte warte einen Moment... (Du kannst die Einstellungen später auch manuell migrieren, indem du zu Einstellungen → Anderes → Alte Einstellungen migrieren gehst)"
 readonly: "Nur Lesezugriff"
 goToDeck: "Zurück zum Deck"
 federationJobs: "Föderation Jobs"

locales/en-US.yml

@@ -1361,14 +1361,11 @@ information: "About"
 chat: "Chat"
 directMessage: "Chat with user"
 directMessage_short: "Message"
-migrateOldSettings: "Migrate old client settings"
-migrateOldSettings_description: "This should be done automatically but if for some reason the migration was not successful, you can trigger the migration process yourself manually. The current configuration information will be overwritten."
 compress: "Compress"
 right: "Right"
 bottom: "Bottom"
 top: "Top"
 embed: "Embed"
-settingsMigrating: "Settings are being migrated, please wait a moment... (You can also migrate manually later by going to Settings→Others→Migrate old settings)"
 readonly: "Read only"
 goToDeck: "Return to Deck"
 federationJobs: "Federation Jobs"

locales/es-ES.yml

@@ -584,7 +584,7 @@ showFixedPostForm: "Mostrar formulario de publicación sobre la línea de tiempo
 showFixedPostFormInChannel: "Mostrar el formulario de publicación por encima de la cronología (Canales)"
 withRepliesByDefaultForNewlyFollowed: "Incluir por defecto respuestas de usuarios recién seguidos en la línea de tiempo"
 newNoteRecived: "Tienes una nota nueva"
-newNote: "Nueva nota"
+newNote: "Nuevas notas"
 sounds: "Sonidos"
 sound: "Sonidos"
 notificationSoundSettings: "Configuración del sonido de las notificaciones"
@@ -1219,7 +1219,7 @@ keepScreenOn: "Mantener pantalla encendida"
 verifiedLink: "Propiedad del enlace verificada"
 notifyNotes: "Notificar nuevas notas"
 unnotifyNotes: "Dejar de notificar nuevas notas"
-notifyUsers: "Usuarios que han activado las notificaciones de publicaciones"
+notifyUsers: "Cuentas con notificaciones activadas"
 authentication: "Autenticación"
 authenticationRequiredToContinue: "Por favor, autentifícate para continuar"
 dateAndTime: "Fecha y hora"
@@ -1361,14 +1361,11 @@ information: "Información"
 chat: "Chat"
 directMessage: "Chatear"
 directMessage_short: "Mensajes"
-migrateOldSettings: "Migrar la configuración anterior"
-migrateOldSettings_description: "Esto debería hacerse automáticamente, pero si por alguna razón la migración no ha tenido éxito, puede activar usted mismo el proceso de migración manualmente. Se sobrescribirá la información de configuración actual."
 compress: "Compresión de la imagen"
 right: "Derecha"
 bottom: "Abajo"
 top: "Arriba"
 embed: "Insertar"
-settingsMigrating: "La configuración está siendo migrada, por favor espera un momento... (También puedes migrar manualmente más tarde yendo a Ajustes  otros migrar configuración antigua"
 readonly: "Solo Lectura"
 goToDeck: "Volver al Deck"
 federationJobs: "Trabajos de Federación"

locales/id-ID.yml

@@ -1358,6 +1358,7 @@ _chat:
   invitations: "Undang"
   history: "Riwayat obrolan"
   noHistory: "Tidak ada riwayat"
+  join: "Gabung"
   members: "Anggota"
   home: "Beranda"
   send: "Kirim"
@@ -2555,6 +2556,8 @@ _deck:
   useSimpleUiForNonRootPages: "Gunakan antarmuka sederhana ke halaman yang dituju"
   usedAsMinWidthWhenFlexible: "Lebar minimum akan digunakan untuk ini ketika opsi \"Atur-otomatis lebar\" dinyalakan"
   flexible: "Atur-otomatis lebar"
+  _howToUse:
+    settings_title: "Pengaturan UI"
   _columns:
     main: "Utama"
     widgets: "Widget"

locales/it-IT.yml

@@ -1361,14 +1361,11 @@ information: "Informazioni"
 chat: "Chat"
 directMessage: "Chattare insieme"
 directMessage_short: "Messaggio"
-migrateOldSettings: "Migrare le vecchie impostazioni"
-migrateOldSettings_description: "Di solito, viene fatto automaticamente. Se per qualche motivo non fossero migrate con successo, è possibile avviare il processo di migrazione manualmente, sovrascrivendo le configurazioni attuali."
 compress: "Compressione"
 right: "Destra"
 bottom: "Sotto"
 top: "Sopra"
 embed: "Incorporare"
-settingsMigrating: "Migrazione delle impostazioni. Attendere prego ... (Puoi anche migrare manualmente in un secondo momento, nel menu: Impostazioni → Altro → Migrazione delle impostazioni)"
 readonly: "Sola lettura"
 goToDeck: "Torna al Deck"
 federationJobs: "Coda di federazione"

locales/ja-JP.yml

@@ -619,6 +619,8 @@ output: "出力"
 script: "スクリプト"
 disablePagesScript: "Pagesのスクリプトを無効にする"
 updateRemoteUser: "リモートユーザー情報の更新"
+unsetMfa: "二要素認証を解除"
+unsetMfaConfirm: "二要素認証を解除しますか？"
 unsetUserAvatar: "アイコンを解除"
 unsetUserAvatarConfirm: "アイコンを解除しますか？"
 unsetUserBanner: "バナーを解除"
@@ -1361,14 +1363,11 @@ information: "情報"
 chat: "チャット"
 directMessage: "ダイレクトメッセージ"
 directMessage_short: "メッセージ"
-migrateOldSettings: "旧設定情報を移行"
-migrateOldSettings_description: "通常これは自動で行われていますが、何らかの理由により上手く移行されなかった場合は手動で移行処理をトリガーできます。現在の設定情報は上書きされます。"
 compress: "圧縮"
 right: "右"
 bottom: "下"
 top: "上"
 embed: "埋め込み"
-settingsMigrating: "設定を移行しています。しばらくお待ちください... (後ほど、設定→その他→旧設定情報を移行 で手動で移行することもできます)"
 readonly: "読み取り専用"
 goToDeck: "デッキへ戻る"
 federationJobs: "連合ジョブ"
@@ -1420,6 +1419,8 @@ addToEmojiPalette: "絵文字パレットに追加"
 emojiPaletteAlreadyAddedConfirm: "この絵文字はすでにこの絵文字パレットに含まれています。追加しなおしますか？"
 append: "末尾に追加"
 prepend: "先頭に追加"
+urlPreviewSensitiveList: "サムネイルの表示を制限するURL"
+urlPreviewSensitiveListDescription: "スペースで区切るとAND指定になり、改行で区切るとOR指定になります。スラッシュで囲むと正規表現になります。一致した場合、サムネイルが表示されなくなります。"
 
 _imageEditing:
   _vars:
@@ -2177,6 +2178,15 @@ _sensitiveMediaDetection:
   setSensitiveFlagAutomaticallyDescription: "この設定をオフにしても内部的に判定結果は保持されます。"
   analyzeVideos: "動画の解析を有効化"
   analyzeVideosDescription: "静止画に加えて動画も解析するようにします。サーバーの負荷が少し増えます。"
+  externalServiceInfo: "センシティブメディアの判定は外部サービス (sensitive-detector) に分離されました。この機能を利用するには、別途サイドカーサービスをセットアップし、下記の接続先を設定する必要があります。接続先が未設定の場合、判定は行われません (非センシティブ扱い)。"
+  apiUrl: "判定サービスの接続先URL"
+  apiUrlDescription: "sensitive-detector サービスのベースURL (例: http://localhost:3009)。プライベートネットワーク上のサービスに接続する場合は、設定ファイルの allowedPrivateNetworks で接続先ネットワークを許可してください。プロキシを使用している場合は、proxyBypassHosts も設定してください。空欄の場合、センシティブ判定は行われません。"
+  apiKey: "APIキー"
+  apiKeyDescription: "判定サービス側で認証 (Bearerトークン) を設定している場合に入力します。設定していない場合は空欄のままにしてください。"
+  timeout: "タイムアウト (ミリ秒)"
+  timeoutDescription: "判定リクエスト1回あたりのタイムアウト時間です。"
+  maxImagesPerRequest: "1リクエストあたりの最大画像数"
+  maxImagesPerRequestDescription: "動画など複数フレームを判定する際、1回のリクエストにまとめて送る画像の最大枚数です。これを超える分は分割して順次送信されます。sensitive-detector 側の maxParts 設定（デフォルト: 10）を超えないように設定してください。超えた場合、そのチャンクは全件非センシティブ扱いとなります。"
 
 _emailUnavailable:
   used: "既に使用されています"
@@ -2517,6 +2527,7 @@ _permissions:
   "read:admin:show-moderation-log": "モデレーションログを見る"
   "read:admin:show-user": "ユーザーのプライベートな情報を見る"
   "write:admin:suspend-user": "ユーザーを凍結する"
+  "write:admin:unset-mfa": "ユーザーの二要素認証を解除する"
   "write:admin:unset-user-avatar": "ユーザーのアバターを削除する"
   "write:admin:unset-user-banner": "ユーザーのバーナーを削除する"
   "write:admin:unsuspend-user": "ユーザーの凍結を解除する"
@@ -3062,6 +3073,7 @@ _moderationLogTypes:
   createAvatarDecoration: "アイコンデコレーションを作成"
   updateAvatarDecoration: "アイコンデコレーションを更新"
   deleteAvatarDecoration: "アイコンデコレーションを削除"
+  unsetMfa: "ユーザーの二要素認証を解除"
   unsetUserAvatar: "ユーザーのアイコンを解除"
   unsetUserBanner: "ユーザーのバナーを解除"
   createSystemWebhook: "SystemWebhookを作成"

locales/ja-KS.yml

@@ -1332,9 +1332,6 @@ preferenceSyncConflictChoiceCancel: "同期の有効化はやめとくわ"
 postForm: "投稿フォーム"
 information: "情報"
 directMessage: "チャットしよか"
-migrateOldSettings: "旧設定情報をお引っ越し"
-migrateOldSettings_description: "通常これは自動で行われるはずなんやけど、なんかの理由で上手く移行できへんかったときは手動で移行処理をポチっとできるで。今の設定情報は上書きされるで。"
-settingsMigrating: "設定を移行しとるで。ちょっと待っとってな... (後で、設定→その他→旧設定情報を移行 で手動で移行することもできるで)"
 driveAboutTip: "ドライブでは、今までアップロードしたファイルがずらーっと表示されるで。<br>\nノートにファイルをもっかいのっけたり、あとで投稿するファイルをその辺に置いとくこともできるねん。<br>\n<b>ファイルをほかすと、前にそのファイルをのっけた全部の場所(ノート、ページ、アバター、バナー等)からも見えんくなるから気いつけてな。</b><br>\nフォルダを作って整理することもできるで。"
 turnItOn: "オンにしとこ"
 turnItOff: "オフでええわ"

locales/ko-KR.yml

@@ -1361,14 +1361,11 @@ information: "정보"
 chat: "채팅"
 directMessage: "채팅하기"
 directMessage_short: "메시지"
-migrateOldSettings: "기존 설정 정보를 이전"
-migrateOldSettings_description: "보통은 자동으로 이루어지지만, 어떤 이유로 인해 성공적으로 이전이 이루어지지 않는 경우 수동으로 이전을 실행할 수 있습니다. 현재 설정 정보는 덮어쓰게 됩니다."
 compress: "압축"
 right: "오른쪽"
 bottom: "아래"
 top: "위"
 embed: "임베드"
-settingsMigrating: "설정을 이전하는 중입니다. 잠시 기다려주십시오... (나중에 '환경설정 → 기타 → 기존 설정 정보를 이전'에서 수동으로 이전할 수도 있습니다)"
 readonly: "읽기 전용"
 goToDeck: "덱으로 돌아가기"
 federationJobs: "연합 작업"

locales/pt-PT.yml

@@ -1347,14 +1347,11 @@ information: "Sobre"
 chat: "Conversas"
 directMessage: "Conversar com usuário"
 directMessage_short: "Mensagem"
-migrateOldSettings: "Migrar configurações antigas de cliente"
-migrateOldSettings_description: "Isso deve ser feito automaticamente. Caso o processo de migração tenha falhado, você pode acioná-lo manualmente. As informações atuais de migração serão substituídas."
 compress: "Comprimir"
 right: "Direita"
 bottom: "Inferior"
 top: "Superior"
 embed: "Embed"
-settingsMigrating: "Configurações estão sendo migradas, aguarde... (Você pode migrar manualmente em Configurações→Outros→Migrar configurações antigas de cliente)"
 readonly: "Ler apenas"
 goToDeck: "Voltar ao Deck"
 federationJobs: "Tarefas de Federação"

locales/th-TH.yml

@@ -1358,14 +1358,11 @@ information: "เกี่ยวกับ"
 chat: "แชต"
 directMessage: "แชตเลย"
 directMessage_short: "ข้อความ"
-migrateOldSettings: "ย้ายข้อมูลการตั้งค่าเก่า"
-migrateOldSettings_description: "โดยปกติจะทำโดยอัตโนมัติ แต่หากด้วยเหตุผลบางประการที่ไม่สามารถย้ายได้สำเร็จ สามารถสั่งย้ายด้วยตนเองได้ การตั้งค่าปัจจุบันจะถูกเขียนทับ"
 compress: "บีบอัด"
 right: "ขวา"
 bottom: "ล่าง"
 top: "บน"
 embed: "ฝัง"
-settingsMigrating: "กำลังย้ายการตั้งค่า กรุณารอสักครู่... (สามารถย้ายด้วยตนเองภายหลังได้ที่ การตั้งค่า → อื่นๆ → ย้ายข้อมูลการตั้งค่าเก่า)"
 readonly: "อ่านได้อย่างเดียว"
 goToDeck: "กลับไปยังเด็ค"
 federationJobs: "งานสหพันธ์"

locales/tl-PH.yml

@@ -0,0 +1 @@
+---

locales/tr-TR.yml

@@ -1358,14 +1358,11 @@ information: "Hakkında"
 chat: "Sohbet"
 directMessage: "Kullanıcıyla sohbet et"
 directMessage_short: "Mesaj"
-migrateOldSettings: "Eski istemci ayarlarını taşıma"
-migrateOldSettings_description: "Bu işlem otomatik olarak yapılmalıdır, ancak herhangi bir nedenle geçiş başarısız olursa, geçiş işlemini manuel olarak kendin başlatabilirsin. Mevcut yapılandırma bilgileri üzerine yazılacaktır."
 compress: "Sıkıştır"
 right: "Sağ"
 bottom: "Alt"
 top: "Üst"
 embed: "Göm"
-settingsMigrating: "Ayarlar taşınıyor, lütfen bir dakika bekle... (Daha sonra Ayarlar→Diğerler→Eski ayarları taşı seçeneğine giderek manuel olarak da taşıyabilirsin)"
 readonly: "Sadece okuma"
 goToDeck: "Güverteye Dön"
 federationJobs: "Federasyon İşleri"

locales/uk-UA.yml

@@ -1314,14 +1314,11 @@ information: "Інформація"
 chat: "Чат"
 directMessage: "Чат із користувачем"
 directMessage_short: "Повідомлення"
-migrateOldSettings: "Перенести минулі налаштування клієнта"
-migrateOldSettings_description: "Це має відбутися автоматично, але якщо з якоїсь причини перенесення не вдалося, ви можете запустити його вручну. Поточні дані конфігурації буде перезаписано."
 compress: "Стиснути"
 right: "Праворуч"
 bottom: "Зверху"
 top: "Знизу"
 embed: "Вбудувати"
-settingsMigrating: "Налаштування переносяться, зачекайте трохи... (Ви також можете перенести їх вручну пізніше: Налаштування → Інше → Перенести старі налаштування)"
 readonly: "Лише для читання"
 goToDeck: "Повернутися до Деки"
 federationJobs: "Завдання федерації"

locales/vi-VN.yml

@@ -1219,8 +1219,6 @@ paste: "dán"
 postForm: "Mẫu đăng"
 information: "Giới thiệu"
 chat: "Trò chuyện"
-migrateOldSettings: "Di chuyển cài đặt cũ"
-migrateOldSettings_description: "Thông thường, quá trình này diễn ra tự động, nhưng nếu vì lý do nào đó mà quá trình di chuyển không thành công, bạn có thể kích hoạt thủ công quy trình di chuyển, quá trình này sẽ ghi đè lên thông tin cấu hình hiện tại của bạn."
 driveAboutTip: "Trong Drive, danh sách các tệp bạn đã tải lên trước đây sẽ được hiển thị.<br>\nBạn có thể sử dụng lại chúng khi đính kèm vào ghi chú, hoặc tải lên trước các tệp để đăng sau.<br>\n<b>Lưu ý rằng nếu bạn xóa một tệp, tệp đó cũng sẽ biến mất khỏi tất cả những nơi đã sử dụng tệp đó (ghi chú, trang, ảnh đại diện, biểu ngữ, v.v.).</b><br>\nBạn cũng có thể tạo các thư mục để sắp xếp chúng."
 inMinutes: "phút"
 inDays: "ngày"

locales/zh-CN.yml

@@ -1361,14 +1361,11 @@ information: "关于"
 chat: "聊天"
 directMessage: "私信"
 directMessage_short: "消息"
-migrateOldSettings: "迁移旧设置信息"
-migrateOldSettings_description: "通常设置信息将自动迁移。但如果由于某种原因迁移不成功，则可以手动触发迁移过程。当前的配置信息将被覆盖。"
 compress: "压缩"
 right: "右"
 bottom: "下"
 top: "上"
 embed: "嵌入"
-settingsMigrating: "正在迁移设置，请稍候。（之后也可以在设置 → 其它 → 迁移旧设置来手动迁移）"
 readonly: "只读"
 goToDeck: "返回至 Deck"
 federationJobs: "联邦作业"

locales/zh-TW.yml

@@ -1361,14 +1361,11 @@ information: "關於"
 chat: "聊天"
 directMessage: "直接訊息"
 directMessage_short: "訊息"
-migrateOldSettings: "遷移舊設定資訊"
-migrateOldSettings_description: "通常情況下，這會自動進行，但若因某些原因未能順利遷移，您可以手動觸發遷移處理。請注意，當前的設定資訊將會被覆寫。"
 compress: "壓縮"
 right: "右"
 bottom: "下"
 top: "上"
 embed: "嵌入"
-settingsMigrating: "正在移轉設定。請稍候……（之後也可以到「設定 → 其他 → 舊設定資訊移轉」中手動進行移轉）"
 readonly: "唯讀"
 goToDeck: "回到多欄模式"
 federationJobs: "聯邦通訊作業"

package.json

@@ -1,12 +1,12 @@
 {
 	"name": "misskey",
-	"version": "2026.6.0-beta.1",
+	"version": "2026.7.0-beta.0",
 	"codename": "nasubi",
 	"repository": {
 		"type": "git",
 		"url": "https://github.com/misskey-dev/misskey.git"
 	},
-	"packageManager": "pnpm@11.5.2",
+	"packageManager": "pnpm@11.11.0",
 	"workspaces": [
 		"packages/misskey-js",
 		"packages/i18n",
@@ -39,11 +39,10 @@
 		"migrateandstart": "pnpm migrate && pnpm start",
 		"watch": "pnpm dev",
 		"dev": "node scripts/dev.mjs",
-		"lint": "pnpm --no-bail -r lint",
-		"cy:open": "pnpm cypress open --config-file=cypress.config.ts",
-		"cy:run": "pnpm cypress run",
-		"e2e": "pnpm start-server-and-test start:test http://localhost:61812 cy:run",
-		"e2e-dev-container": "ncp ./.config/cypress-devcontainer.yml ./.config/test.yml && pnpm start-server-and-test start:test http://localhost:61812 cy:run",
+		"check-dts": "node scripts/check-dts.mjs",
+		"lint": "pnpm --no-bail -r lint && pnpm check-dts",
+		"e2e": "pnpm start-server-and-test start:test http://localhost:61812 \"pnpm --filter frontend test:e2e\"",
+		"e2e-dev-container": "ncp ./.config/playwright-devcontainer.yml ./.config/test.yml && pnpm start-server-and-test start:test http://localhost:61812 \"pnpm --filter frontend test:e2e\"",
 		"backend-unit-test": "cd packages/backend && pnpm test",
 		"backend-unit-test-and-coverage": "cd packages/backend && pnpm test-and-coverage",
 		"test": "pnpm -r test",
@@ -53,33 +52,25 @@
 		"cleanall": "pnpm clean-all"
 	},
 	"dependencies": {
-		"cssnano": "8.0.1",
 		"esbuild": "0.28.1",
 		"execa": "9.6.1",
-		"ignore-walk": "8.0.0",
-		"js-yaml": "4.2.0",
-		"postcss": "8.5.15",
-		"tar": "7.5.16",
-		"terser": "5.48.0"
+		"ignore-walk": "9.0.0",
+		"js-yaml": "5.2.1",
+		"tar": "7.5.20"
 	},
 	"devDependencies": {
-		"@eslint/js": "9.39.4",
+		"@eslint/js": "9.39.5",
 		"@misskey-dev/eslint-plugin": "2.1.0",
-		"@types/js-yaml": "4.0.9",
-		"@types/node": "24.13.1",
-		"@typescript-eslint/eslint-plugin": "8.61.0",
-		"@typescript-eslint/parser": "8.61.0",
-		"@typescript/native-preview": "7.0.0-dev.20260426.1",
+		"@types/node": "26.1.1",
+		"@typescript-eslint/eslint-plugin": "8.63.0",
+		"@typescript-eslint/parser": "8.63.0",
+		"@typescript/native": "npm:typescript@7.0.2",
 		"cross-env": "10.1.0",
-		"cypress": "15.17.0",
-		"eslint": "9.39.4",
-		"globals": "17.6.0",
+		"eslint": "9.39.5",
+		"globals": "17.7.0",
 		"ncp": "2.0.0",
-		"pnpm": "11.5.2",
-		"start-server-and-test": "3.0.9",
-		"typescript": "5.9.3"
-	},
-	"optionalDependencies": {
-		"@tensorflow/tfjs-core": "4.22.0"
+		"pnpm": "11.11.0",
+		"start-server-and-test": "3.0.11",
+		"typescript": "npm:@typescript/typescript6@6.0.2"
 	}
 }